Sr Examen

xy+3y-2yx+4x+c la ecuación

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Solución numérica:

Buscar la solución numérica en el intervalo [, ]

Solución

Ha introducido [src]
x*y + 3*y - 2*y*x + 4*x + c = 0
$$c + \left(4 x + \left(- x 2 y + \left(x y + 3 y\right)\right)\right) = 0$$
Solución detallada
Tenemos una ecuación lineal:
x*y+3*y-2*y*x+4*x+c = 0

Sumamos los términos semejantes en el miembro izquierdo de la ecuación:
c + 3*y + 4*x - x*y = 0

Move the summands with the other variables
del miembro izquierdo al derecho, obtenemos:
$$- x y + 4 x + 3 y = - c$$
Dividamos ambos miembros de la ecuación en (3*y + 4*x - x*y)/y
y = -c / ((3*y + 4*x - x*y)/y)

Obtenemos la respuesta: y = (c + 4*x)/(-3 + x)
Resolución de la ecuación paramétrica
Se da la ecuación con parámetro:
$$c - x y + 4 x + 3 y = 0$$
Коэффициент при y равен
$$3 - x$$
entonces son posibles los casos para x :
$$x < 3$$
$$x = 3$$
Consideremos todos los casos con detalles:
Con
$$x < 3$$
la ecuación será
$$c + y + 8 = 0$$
su solución
$$y = - c - 8$$
Con
$$x = 3$$
la ecuación será
$$c + 12 = 0$$
su solución
Gráfica
Suma y producto de raíces [src]
suma
  /(-3 + re(x))*(4*im(x) + im(c))   (4*re(x) + re(c))*im(x)\   (-3 + re(x))*(4*re(x) + re(c))   (4*im(x) + im(c))*im(x)
I*|------------------------------ - -----------------------| + ------------------------------ + -----------------------
  |                2     2                       2     2   |                   2     2                       2     2   
  \    (-3 + re(x))  + im (x)        (-3 + re(x))  + im (x)/       (-3 + re(x))  + im (x)        (-3 + re(x))  + im (x)
$$i \left(- \frac{\left(\operatorname{re}{\left(c\right)} + 4 \operatorname{re}{\left(x\right)}\right) \operatorname{im}{\left(x\right)}}{\left(\operatorname{re}{\left(x\right)} - 3\right)^{2} + \left(\operatorname{im}{\left(x\right)}\right)^{2}} + \frac{\left(\operatorname{re}{\left(x\right)} - 3\right) \left(\operatorname{im}{\left(c\right)} + 4 \operatorname{im}{\left(x\right)}\right)}{\left(\operatorname{re}{\left(x\right)} - 3\right)^{2} + \left(\operatorname{im}{\left(x\right)}\right)^{2}}\right) + \frac{\left(\operatorname{re}{\left(c\right)} + 4 \operatorname{re}{\left(x\right)}\right) \left(\operatorname{re}{\left(x\right)} - 3\right)}{\left(\operatorname{re}{\left(x\right)} - 3\right)^{2} + \left(\operatorname{im}{\left(x\right)}\right)^{2}} + \frac{\left(\operatorname{im}{\left(c\right)} + 4 \operatorname{im}{\left(x\right)}\right) \operatorname{im}{\left(x\right)}}{\left(\operatorname{re}{\left(x\right)} - 3\right)^{2} + \left(\operatorname{im}{\left(x\right)}\right)^{2}}$$
=
  /(-3 + re(x))*(4*im(x) + im(c))   (4*re(x) + re(c))*im(x)\   (-3 + re(x))*(4*re(x) + re(c))   (4*im(x) + im(c))*im(x)
I*|------------------------------ - -----------------------| + ------------------------------ + -----------------------
  |                2     2                       2     2   |                   2     2                       2     2   
  \    (-3 + re(x))  + im (x)        (-3 + re(x))  + im (x)/       (-3 + re(x))  + im (x)        (-3 + re(x))  + im (x)
$$i \left(- \frac{\left(\operatorname{re}{\left(c\right)} + 4 \operatorname{re}{\left(x\right)}\right) \operatorname{im}{\left(x\right)}}{\left(\operatorname{re}{\left(x\right)} - 3\right)^{2} + \left(\operatorname{im}{\left(x\right)}\right)^{2}} + \frac{\left(\operatorname{re}{\left(x\right)} - 3\right) \left(\operatorname{im}{\left(c\right)} + 4 \operatorname{im}{\left(x\right)}\right)}{\left(\operatorname{re}{\left(x\right)} - 3\right)^{2} + \left(\operatorname{im}{\left(x\right)}\right)^{2}}\right) + \frac{\left(\operatorname{re}{\left(c\right)} + 4 \operatorname{re}{\left(x\right)}\right) \left(\operatorname{re}{\left(x\right)} - 3\right)}{\left(\operatorname{re}{\left(x\right)} - 3\right)^{2} + \left(\operatorname{im}{\left(x\right)}\right)^{2}} + \frac{\left(\operatorname{im}{\left(c\right)} + 4 \operatorname{im}{\left(x\right)}\right) \operatorname{im}{\left(x\right)}}{\left(\operatorname{re}{\left(x\right)} - 3\right)^{2} + \left(\operatorname{im}{\left(x\right)}\right)^{2}}$$
producto
  /(-3 + re(x))*(4*im(x) + im(c))   (4*re(x) + re(c))*im(x)\   (-3 + re(x))*(4*re(x) + re(c))   (4*im(x) + im(c))*im(x)
I*|------------------------------ - -----------------------| + ------------------------------ + -----------------------
  |                2     2                       2     2   |                   2     2                       2     2   
  \    (-3 + re(x))  + im (x)        (-3 + re(x))  + im (x)/       (-3 + re(x))  + im (x)        (-3 + re(x))  + im (x)
$$i \left(- \frac{\left(\operatorname{re}{\left(c\right)} + 4 \operatorname{re}{\left(x\right)}\right) \operatorname{im}{\left(x\right)}}{\left(\operatorname{re}{\left(x\right)} - 3\right)^{2} + \left(\operatorname{im}{\left(x\right)}\right)^{2}} + \frac{\left(\operatorname{re}{\left(x\right)} - 3\right) \left(\operatorname{im}{\left(c\right)} + 4 \operatorname{im}{\left(x\right)}\right)}{\left(\operatorname{re}{\left(x\right)} - 3\right)^{2} + \left(\operatorname{im}{\left(x\right)}\right)^{2}}\right) + \frac{\left(\operatorname{re}{\left(c\right)} + 4 \operatorname{re}{\left(x\right)}\right) \left(\operatorname{re}{\left(x\right)} - 3\right)}{\left(\operatorname{re}{\left(x\right)} - 3\right)^{2} + \left(\operatorname{im}{\left(x\right)}\right)^{2}} + \frac{\left(\operatorname{im}{\left(c\right)} + 4 \operatorname{im}{\left(x\right)}\right) \operatorname{im}{\left(x\right)}}{\left(\operatorname{re}{\left(x\right)} - 3\right)^{2} + \left(\operatorname{im}{\left(x\right)}\right)^{2}}$$
=
I*((-3 + re(x))*(4*im(x) + im(c)) - (4*re(x) + re(c))*im(x)) + (-3 + re(x))*(4*re(x) + re(c)) + (4*im(x) + im(c))*im(x)
-----------------------------------------------------------------------------------------------------------------------
                                                             2     2                                                   
                                                 (-3 + re(x))  + im (x)                                                
$$\frac{i \left(- \left(\operatorname{re}{\left(c\right)} + 4 \operatorname{re}{\left(x\right)}\right) \operatorname{im}{\left(x\right)} + \left(\operatorname{re}{\left(x\right)} - 3\right) \left(\operatorname{im}{\left(c\right)} + 4 \operatorname{im}{\left(x\right)}\right)\right) + \left(\operatorname{re}{\left(c\right)} + 4 \operatorname{re}{\left(x\right)}\right) \left(\operatorname{re}{\left(x\right)} - 3\right) + \left(\operatorname{im}{\left(c\right)} + 4 \operatorname{im}{\left(x\right)}\right) \operatorname{im}{\left(x\right)}}{\left(\operatorname{re}{\left(x\right)} - 3\right)^{2} + \left(\operatorname{im}{\left(x\right)}\right)^{2}}$$
(i*((-3 + re(x))*(4*im(x) + im(c)) - (4*re(x) + re(c))*im(x)) + (-3 + re(x))*(4*re(x) + re(c)) + (4*im(x) + im(c))*im(x))/((-3 + re(x))^2 + im(x)^2)
Respuesta rápida [src]
       /(-3 + re(x))*(4*im(x) + im(c))   (4*re(x) + re(c))*im(x)\   (-3 + re(x))*(4*re(x) + re(c))   (4*im(x) + im(c))*im(x)
y1 = I*|------------------------------ - -----------------------| + ------------------------------ + -----------------------
       |                2     2                       2     2   |                   2     2                       2     2   
       \    (-3 + re(x))  + im (x)        (-3 + re(x))  + im (x)/       (-3 + re(x))  + im (x)        (-3 + re(x))  + im (x)
$$y_{1} = i \left(- \frac{\left(\operatorname{re}{\left(c\right)} + 4 \operatorname{re}{\left(x\right)}\right) \operatorname{im}{\left(x\right)}}{\left(\operatorname{re}{\left(x\right)} - 3\right)^{2} + \left(\operatorname{im}{\left(x\right)}\right)^{2}} + \frac{\left(\operatorname{re}{\left(x\right)} - 3\right) \left(\operatorname{im}{\left(c\right)} + 4 \operatorname{im}{\left(x\right)}\right)}{\left(\operatorname{re}{\left(x\right)} - 3\right)^{2} + \left(\operatorname{im}{\left(x\right)}\right)^{2}}\right) + \frac{\left(\operatorname{re}{\left(c\right)} + 4 \operatorname{re}{\left(x\right)}\right) \left(\operatorname{re}{\left(x\right)} - 3\right)}{\left(\operatorname{re}{\left(x\right)} - 3\right)^{2} + \left(\operatorname{im}{\left(x\right)}\right)^{2}} + \frac{\left(\operatorname{im}{\left(c\right)} + 4 \operatorname{im}{\left(x\right)}\right) \operatorname{im}{\left(x\right)}}{\left(\operatorname{re}{\left(x\right)} - 3\right)^{2} + \left(\operatorname{im}{\left(x\right)}\right)^{2}}$$
y1 = i*(-(re(c) + 4*re(x))*im(x)/((re(x) - 3)^2 + im(x)^2) + (re(x) - 3)*(im(c) + 4*im(x))/((re(x) - 3)^2 + im(x)^2)) + (re(c) + 4*re(x))*(re(x) - 3)/((re(x) - 3)^2 + im(x)^2) + (im(c) + 4*im(x))*im(x)/((re(x) - 3)^2 + im(x)^2)