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Ecuación diferencial dy/dx=-1+1/cos(x+y)

El profesor se sorprenderá mucho al ver tu solución correcta😉

v

Para el problema de Cauchy:

y() =
y'() =
y''() =
y'''() =
y''''() =

Gráfico:

interior superior

Solución

Ha introducido [src]
d                     1      
--(y(x)) = -1 + -------------
dx              cos(x + y(x))
$$\frac{d}{d x} y{\left(x \right)} = -1 + \frac{1}{\cos{\left(x + y{\left(x \right)} \right)}}$$
y' = -1 + 1/cos(x + y)
Solución detallada
Tenemos la ecuación:
$$\frac{d}{d x} y{\left(x \right)} + 1 - \frac{1}{\cos{\left(x + y{\left(x \right)} \right)}} = 0$$
Sustituimos
$$u{\left(x \right)} = x + y{\left(x \right)}$$
y porque
$$\frac{d}{d x} y{\left(x \right)} + 1 = \frac{d}{d x} u{\left(x \right)}$$
entonces
$$\frac{d}{d x} y{\left(x \right)} = \frac{d}{d x} u{\left(x \right)} - 1$$
sustituimos
$$\frac{d}{d x} \left(- x + u{\left(x \right)}\right) + 1 - \frac{1}{\cos{\left(u{\left(x \right)} \right)}} = 0$$
o
$$\frac{d}{d x} u{\left(x \right)} - \frac{1}{\cos{\left(u{\left(x \right)} \right)}} = 0$$
Esta ecuación diferencial tiene la forma:
f1(x)*g1(u)*u' = f2(x)*g2(u),

donde
$$\operatorname{f_{1}}{\left(x \right)} = 1$$
$$\operatorname{g_{1}}{\left(u \right)} = 1$$
$$\operatorname{f_{2}}{\left(x \right)} = 1$$
$$\operatorname{g_{2}}{\left(u \right)} = \frac{1}{\cos{\left(u{\left(x \right)} \right)}}$$
Pasemos la ecuación a la forma:
g1(u)/g2(u)*u'= f2(x)/f1(x).

Dividamos ambos miembros de la ecuación en g2(u)
$$\frac{1}{\cos{\left(u{\left(x \right)} \right)}}$$
obtendremos
$$\cos{\left(u{\left(x \right)} \right)} \frac{d}{d x} u{\left(x \right)} = 1$$
Con esto hemos separado las variables x y u.

Ahora multipliquemos las dos partes de la ecuación por dx,
entonces la ecuación será así
$$dx \cos{\left(u{\left(x \right)} \right)} \frac{d}{d x} u{\left(x \right)} = dx$$
o
$$du \cos{\left(u{\left(x \right)} \right)} = dx$$

Tomemos la integral de las dos partes de la ecuación:
- de la parte izquierda la integral por u,
- de la parte derecha la integral por x.
$$\int \cos{\left(u \right)}\, du = \int 1\, dx$$
Solución detallada de la integral con u
Solución detallada de la integral con x
Tomemos estas integrales
$$\sin{\left(u \right)} = Const + x$$
Solución detallada de una ecuación simple
Hemos recibido una ecuación ordinaria con la incógnica u.
(Const - es una constante)

La solución:
$$\operatorname{u_{1}} = u{\left(x \right)} = \pi - \operatorname{asin}{\left(C_{1} + x \right)}$$
$$\operatorname{u_{2}} = u{\left(x \right)} = \operatorname{asin}{\left(C_{1} + x \right)}$$
hacemos cambio inverso
$$y{\left(x \right)} = - x + u{\left(x \right)}$$
$$y1 = y(x) = - x - \operatorname{asin}{\left(C_{1} + x \right)} + \pi$$
$$y2 = y(x) = - x + \operatorname{asin}{\left(C_{1} + x \right)}$$
Respuesta [src]
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                                                                                                                                                                                     |           2            2       2*sin (C1)*|-1 + -------|                  |           2            2       2*sin (C1)*|-1 + -------|                                                                                                                                                                                                         |       2            2       2*sin (C1)*|-1 + -------||              |         2            2       3*sin (C1)*|-1 + -------||                                                          |                  |           2            2       2*sin (C1)*|-1 + -------|                  |           2            2       2*sin (C1)*|-1 + -------|                                                                                                                                                                                                         |       2            2       2*sin (C1)*|-1 + -------||              |         2            2       3*sin (C1)*|-1 + -------||                                                          |                                                                                                                                                                                                       |           2        cos(C1)              cos(C1)                             |         2            2       3*sin (C1)*|-1 + -------||        2            2       6*sin (C1)*|-1 + -------||              |       2            2       2*sin (C1)*|-1 + -------||              |         2            2       3*sin (C1)*|-1 + -------||                                                          |                                                                                                                                                                                                       |           2        cos(C1)              cos(C1)                             |         2            2       3*sin (C1)*|-1 + -------||        2            2       6*sin (C1)*|-1 + -------||              |       2            2       2*sin (C1)*|-1 + -------||              |         2            2       3*sin (C1)*|-1 + -------||                                                          |      |           2            2       2*sin (C1)*|-1 + -------|                  |           2            2       2*sin (C1)*|-1 + -------|                                                                                                                                   |                                                                                                                                   |                
                                                                                                                                                                                     |        sin (C1)   2*sin (C1)              \     cos(C1)/                  |        sin (C1)   2*sin (C1)              \     cos(C1)/                                                                                                                                                                                                   2     |    sin (C1)   2*sin (C1)              \     cos(C1)/|        2     |    3*sin (C1)   3*sin (C1)              \     cos(C1)/|                                                          |                  |        sin (C1)   2*sin (C1)              \     cos(C1)/                  |        sin (C1)   2*sin (C1)              \     cos(C1)/                                                                                                                                                                                                   2     |    sin (C1)   2*sin (C1)              \     cos(C1)/|        2     |    3*sin (C1)   3*sin (C1)              \     cos(C1)/|                                                          |                                                                                                                                                                                                 2     |        cos (C1)                                              /        1   \ |    3*sin (C1)   3*sin (C1)              \     cos(C1)/|   6*sin (C1)   6*sin (C1)              \     cos(C1)/|        2     |    sin (C1)   2*sin (C1)              \     cos(C1)/|        2     |    3*sin (C1)   3*sin (C1)              \     cos(C1)/|                                                          |                                                                                                                                                                                                 2     |        cos (C1)                                              /        1   \ |    3*sin (C1)   3*sin (C1)              \     cos(C1)/|   6*sin (C1)   6*sin (C1)              \     cos(C1)/|        2     |    sin (C1)   2*sin (C1)              \     cos(C1)/|        2     |    3*sin (C1)   3*sin (C1)              \     cos(C1)/|                                                          |      |        sin (C1)   2*sin (C1)              \     cos(C1)/                  |        sin (C1)   2*sin (C1)              \     cos(C1)/                                                                                                                                   |                                                                                                                                   |                
                                               /                              /                                 2     /        1   \\                     2     /        1   \\      |    1 + -------- + ---------- + -------------------------                  |    1 + -------- + ---------- + -------------------------                    /                                                             4     /        1   \        2     /        1   \\                                                           2*sin (C1)*|1 + -------- + ---------- + -------------------------|   4*sin (C1)*|4 + ---------- + ---------- + -------------------------|         4     /        1   \         2     /        1   \|                  |    1 + -------- + ---------- + -------------------------                  |    1 + -------- + ---------- + -------------------------                    /                                                             4     /        1   \        2     /        1   \\                                                           2*sin (C1)*|1 + -------- + ---------- + -------------------------|   4*sin (C1)*|4 + ---------- + ---------- + -------------------------|         4     /        1   \         2     /        1   \|                    /                                                             4     /        1   \        2     /        1   \\                                                           sin (C1)*|8 + ----------------------------------------------------- + 2*|-1 + -------|*|4 + ---------- + ---------- + -------------------------| + ---------- + ---------- + -------------------------|   2*sin (C1)*|1 + -------- + ---------- + -------------------------|   4*sin (C1)*|4 + ---------- + ---------- + -------------------------|         4     /        1   \         2     /        1   \|                    /                                                             4     /        1   \        2     /        1   \\                                                           sin (C1)*|8 + ----------------------------------------------------- + 2*|-1 + -------|*|4 + ---------- + ---------- + -------------------------| + ---------- + ---------- + -------------------------|   2*sin (C1)*|1 + -------- + ---------- + -------------------------|   4*sin (C1)*|4 + ---------- + ---------- + -------------------------|         4     /        1   \         2     /        1   \|      |    1 + -------- + ---------- + -------------------------                  |    1 + -------- + ---------- + -------------------------                    /                                   2     /        1   \\                                  2     /        1   \|                    /                                   2     /        1   \\                                  2     /        1   \|                
                                               |       2                      |       2            2       2*sin (C1)*|-1 + -------||        2       2*sin (C1)*|-1 + -------||      |           2        cos(C1)              cos(C1)                           |           2        cos(C1)              cos(C1)                             |         4            2            2            4       6*sin (C1)*|-1 + -------|   7*sin (C1)*|-1 + -------||         4             2             2             4                  |       2        cos(C1)              cos(C1)         |              |     cos(C1)         2                 cos(C1)         |   24*sin (C1)*|-1 + -------|   28*sin (C1)*|-1 + -------||                  |           2        cos(C1)              cos(C1)                           |           2        cos(C1)              cos(C1)                             |         4            2            2            4       6*sin (C1)*|-1 + -------|   7*sin (C1)*|-1 + -------||         4             2             2             4                  |       2        cos(C1)              cos(C1)         |              |     cos(C1)         2                 cos(C1)         |   24*sin (C1)*|-1 + -------|   28*sin (C1)*|-1 + -------||                    |         4            2            2            4       6*sin (C1)*|-1 + -------|   7*sin (C1)*|-1 + -------||         4             2             2             4                |                           cos(C1)                            \     cos(C1)/ |     cos(C1)         2                 cos(C1)         |    cos(C1)         2                 cos(C1)         |              |       2        cos(C1)              cos(C1)         |              |     cos(C1)         2                 cos(C1)         |   24*sin (C1)*|-1 + -------|   28*sin (C1)*|-1 + -------||                    |         4            2            2            4       6*sin (C1)*|-1 + -------|   7*sin (C1)*|-1 + -------||         4             2             2             4                |                           cos(C1)                            \     cos(C1)/ |     cos(C1)         2                 cos(C1)         |    cos(C1)         2                 cos(C1)         |              |       2        cos(C1)              cos(C1)         |              |     cos(C1)         2                 cos(C1)         |   24*sin (C1)*|-1 + -------|   28*sin (C1)*|-1 + -------||      |           2        cos(C1)              cos(C1)                           |           2        cos(C1)              cos(C1)                             |         2            2       3*sin (C1)*|-1 + -------||        2            2       6*sin (C1)*|-1 + -------||                    |         2            2       3*sin (C1)*|-1 + -------||        2            2       6*sin (C1)*|-1 + -------||                
                                             3 |    sin (C1)   /        1   \ |    sin (C1)   2*sin (C1)              \     cos(C1)/|   2*sin (C1)              \     cos(C1)/|    5 |        cos (C1)                                            /        1   \ |        cos (C1)                                              /        1   \ |    6*sin (C1)   7*sin (C1)   8*sin (C1)   9*sin (C1)              \     cos(C1)/              \     cos(C1)/|   24*sin (C1)   28*sin (C1)   32*sin (C1)   36*sin (C1)              \    cos (C1)                                         /              \                  cos (C1)                             /               \     cos(C1)/               \     cos(C1)/|   /        1   \ |        cos (C1)                                            /        1   \ |        cos (C1)                                              /        1   \ |    6*sin (C1)   7*sin (C1)   8*sin (C1)   9*sin (C1)              \     cos(C1)/              \     cos(C1)/|   24*sin (C1)   28*sin (C1)   32*sin (C1)   36*sin (C1)              \    cos (C1)                                         /              \                  cos (C1)                             /               \     cos(C1)/               \     cos(C1)/|     /        1   \ |    6*sin (C1)   7*sin (C1)   8*sin (C1)   9*sin (C1)              \     cos(C1)/              \     cos(C1)/|   24*sin (C1)   28*sin (C1)   32*sin (C1)   36*sin (C1)            \                                                                             \                  cos (C1)                             /                 cos (C1)                             /              \    cos (C1)                                         /              \                  cos (C1)                             /               \     cos(C1)/               \     cos(C1)/|     /        1   \ |    6*sin (C1)   7*sin (C1)   8*sin (C1)   9*sin (C1)              \     cos(C1)/              \     cos(C1)/|   24*sin (C1)   28*sin (C1)   32*sin (C1)   36*sin (C1)            \                                                                             \                  cos (C1)                             /                 cos (C1)                             /              \    cos (C1)                                         /              \                  cos (C1)                             /               \     cos(C1)/               \     cos(C1)/|    4 |        cos (C1)                                            /        1   \ |        cos (C1)                                              /        1   \ |    3*sin (C1)   3*sin (C1)              \     cos(C1)/|   6*sin (C1)   6*sin (C1)              \     cos(C1)/|     /        1   \ |    3*sin (C1)   3*sin (C1)              \     cos(C1)/|   6*sin (C1)   6*sin (C1)              \     cos(C1)/|                
                                            x *|1 + -------- + |-1 + -------|*|1 + -------- + ---------- + -------------------------| + ---------- + -------------------------|   x *|8 + ----------------------------------------------------- + |-1 + -------|*|8 + ----------------------------------------------------- + 4*|-1 + -------|*|2 + ---------- + ---------- + ---------- + ---------- + ------------------------- + -------------------------| + ----------- + ----------- + ----------- + ----------- + ------------------------------------------------------------------ + -------------------------------------------------------------------- + -------------------------- + --------------------------| + |-1 + -------|*|8 + ----------------------------------------------------- + |-1 + -------|*|8 + ----------------------------------------------------- + 4*|-1 + -------|*|2 + ---------- + ---------- + ---------- + ---------- + ------------------------- + -------------------------| + ----------- + ----------- + ----------- + ----------- + ------------------------------------------------------------------ + -------------------------------------------------------------------- + -------------------------- + --------------------------| + 4*|-1 + -------|*|2 + ---------- + ---------- + ---------- + ---------- + ------------------------- + -------------------------| + ----------- + ----------- + ----------- + ----------- + ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + ------------------------------------------------------------------ + -------------------------------------------------------------------- + -------------------------- + --------------------------| + 4*|-1 + -------|*|2 + ---------- + ---------- + ---------- + ---------- + ------------------------- + -------------------------| + ----------- + ----------- + ----------- + ----------- + ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + ------------------------------------------------------------------ + -------------------------------------------------------------------- + -------------------------- + --------------------------|   x *|8 + ----------------------------------------------------- + |-1 + -------|*|8 + ----------------------------------------------------- + 2*|-1 + -------|*|4 + ---------- + ---------- + -------------------------| + ---------- + ---------- + -------------------------| + 2*|-1 + -------|*|4 + ---------- + ---------- + -------------------------| + ---------- + ---------- + -------------------------|*sin(C1)        
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              /        1   \   x *sin(C1)      \    cos (C1)                  \    cos (C1)                                         /                                         /      \                                                                           \                                                                             \     cos (C1)                  cos (C1)     cos (C1)             cos (C1)                                    /     cos (C1)                    cos (C1)      cos (C1)                                 cos (C1)                                                              cos (C1)                                          cos (C1)                                      /                  \                                                                           \                                                                             \     cos (C1)                  cos (C1)     cos (C1)             cos (C1)                                    /     cos (C1)                    cos (C1)      cos (C1)                                 cos (C1)                                                              cos (C1)                                          cos (C1)                                      /                    \     cos (C1)                  cos (C1)     cos (C1)             cos (C1)                                    /     cos (C1)                    cos (C1)      cos (C1)                                                                                                    cos (C1)                                                                                                                               cos (C1)                                                              cos (C1)                                          cos (C1)                                      /                    \     cos (C1)                  cos (C1)     cos (C1)             cos (C1)                                    /     cos (C1)                    cos (C1)      cos (C1)                                                                                                    cos (C1)                                                                                                                               cos (C1)                                                              cos (C1)                                          cos (C1)                                      /      \                                                                           \                                                                             \                  cos (C1)                             /                 cos (C1)                             /                    \                  cos (C1)                             /                 cos (C1)                             /            / 6\
y(x) = C1 + x*|-1 + -------| + ---------- + ----------------------------------------------------------------------------------------------------------------------------------- + ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + O\x /
              \     cos(C1)/        3                                                                         2                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   2                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            3                                                                                                                                                                                                                   
                               2*cos (C1)                                                                6*cos (C1)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        120*cos (C1)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  24*cos (C1)                                                                                                                                                                                                               
$$y{\left(x \right)} = x \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) + \frac{x^{2} \sin{\left(C_{1} \right)}}{2 \cos^{3}{\left(C_{1} \right)}} + \frac{x^{3} \left(\left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \left(\frac{2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 1\right) + \frac{2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 1\right)}{6 \cos^{2}{\left(C_{1} \right)}} + \frac{x^{4} \left(2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \left(\frac{3 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{3 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{3 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 4\right) + \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \left(2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \left(\frac{3 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{3 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{3 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 4\right) + \frac{6 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\frac{2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 1}{\cos{\left(C_{1} \right)}} + \frac{6 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{6 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 8\right) + \frac{6 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\frac{2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 1}{\cos{\left(C_{1} \right)}} + \frac{6 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{6 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 8\right) \sin{\left(C_{1} \right)}}{24 \cos^{3}{\left(C_{1} \right)}} + \frac{x^{5} \left(4 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \left(\frac{6 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{4}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{7 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{6 \sin^{4}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{9 \sin^{4}{\left(C_{1} \right)}}{\cos^{4}{\left(C_{1} \right)}} + \frac{7 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{8 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 2\right) + \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \left(4 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \left(\frac{6 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{4}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{7 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{6 \sin^{4}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{9 \sin^{4}{\left(C_{1} \right)}}{\cos^{4}{\left(C_{1} \right)}} + \frac{7 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{8 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 2\right) + \frac{24 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{4}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{28 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \left(\frac{2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 1\right) \sin^{2}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{\frac{2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 1}{\cos{\left(C_{1} \right)}} + \frac{4 \left(\frac{3 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{3 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{3 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 4\right) \sin^{2}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{24 \sin^{4}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{36 \sin^{4}{\left(C_{1} \right)}}{\cos^{4}{\left(C_{1} \right)}} + \frac{28 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{32 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 8\right) + \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \left(4 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \left(\frac{6 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{4}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{7 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{6 \sin^{4}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{9 \sin^{4}{\left(C_{1} \right)}}{\cos^{4}{\left(C_{1} \right)}} + \frac{7 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{8 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 2\right) + \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \left(4 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \left(\frac{6 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{4}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{7 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{6 \sin^{4}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{9 \sin^{4}{\left(C_{1} \right)}}{\cos^{4}{\left(C_{1} \right)}} + \frac{7 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{8 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 2\right) + \frac{24 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{4}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{28 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \left(\frac{2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 1\right) \sin^{2}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{\frac{2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 1}{\cos{\left(C_{1} \right)}} + \frac{4 \left(\frac{3 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{3 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{3 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 4\right) \sin^{2}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{24 \sin^{4}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{36 \sin^{4}{\left(C_{1} \right)}}{\cos^{4}{\left(C_{1} \right)}} + \frac{28 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{32 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 8\right) + \frac{24 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{4}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{28 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \left(\frac{2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 1\right) \sin^{2}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{\frac{2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 1}{\cos{\left(C_{1} \right)}} + \frac{4 \left(\frac{3 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{3 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{3 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 4\right) \sin^{2}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{\left(2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \left(\frac{3 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{3 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{3 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 4\right) + \frac{6 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\frac{2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 1}{\cos{\left(C_{1} \right)}} + \frac{6 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{6 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 8\right) \sin^{2}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{24 \sin^{4}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{36 \sin^{4}{\left(C_{1} \right)}}{\cos^{4}{\left(C_{1} \right)}} + \frac{28 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{32 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 8\right) + \frac{24 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{4}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{28 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \left(\frac{2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 1\right) \sin^{2}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{\frac{2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 1}{\cos{\left(C_{1} \right)}} + \frac{4 \left(\frac{3 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{3 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{3 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 4\right) \sin^{2}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{\left(2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \left(\frac{3 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{3 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{3 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 4\right) + \frac{6 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\frac{2 \left(-1 + \frac{1}{\cos{\left(C_{1} \right)}}\right) \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{2 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{\sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 1}{\cos{\left(C_{1} \right)}} + \frac{6 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{6 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 8\right) \sin^{2}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{24 \sin^{4}{\left(C_{1} \right)}}{\cos^{3}{\left(C_{1} \right)}} + \frac{36 \sin^{4}{\left(C_{1} \right)}}{\cos^{4}{\left(C_{1} \right)}} + \frac{28 \sin^{2}{\left(C_{1} \right)}}{\cos{\left(C_{1} \right)}} + \frac{32 \sin^{2}{\left(C_{1} \right)}}{\cos^{2}{\left(C_{1} \right)}} + 8\right)}{120 \cos^{2}{\left(C_{1} \right)}} + C_{1} + O\left(x^{6}\right)$$
Gráfico para el problema de Cauchy
Clasificación
1st power series
lie group
Respuesta numérica [src]
(x, y):
(-10.0, 0.75)
(-7.777777777777778, -2.169463124154396)
(-5.555555555555555, 6.9520529151772e-310)
(-3.333333333333333, 6.9518346485953e-310)
(-1.1111111111111107, 6.9518346486016e-310)
(1.1111111111111107, 6.95183464860793e-310)
(3.333333333333334, 6.95183464861425e-310)
(5.555555555555557, 6.95183464918974e-310)
(7.777777777777779, 6.9520529151772e-310)
(10.0, 6.9518346493257e-310)
(10.0, 6.9518346493257e-310)