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Ecuación diferencial y"-4*y'+5y=e^x/cosx

El profesor se sorprenderá mucho al ver tu solución correcta😉

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Para el problema de Cauchy:

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

Gráfico:

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Solución

Ha introducido [src]
                          2            x  
    d                    d            e   
- 4*--(y(x)) + 5*y(x) + ---(y(x)) = ------
    dx                    2         cos(x)
                        dx                
$$5 y{\left(x \right)} - 4 \frac{d}{d x} y{\left(x \right)} + \frac{d^{2}}{d x^{2}} y{\left(x \right)} = \frac{e^{x}}{\cos{\left(x \right)}}$$
5*y - 4*y' + y'' = exp(x)/cos(x)
Respuesta [src]
       /          /            /       /             \       \   \   
       |          |            |      |              |       |   |   
       |          |            |      |  -x          |       |  x|  x
y(x) = |-sin(x) + |C2*sin(x) + |C1 -  | e  *tan(x) dx|*cos(x)|*e |*e 
       |          |            |      |              |       |   |   
       \          \            \     /               /       /   /   
$$y{\left(x \right)} = \left(\left(C_{2} \sin{\left(x \right)} + \left(C_{1} - \int e^{- x} \tan{\left(x \right)}\, dx\right) \cos{\left(x \right)}\right) e^{x} - \sin{\left(x \right)}\right) e^{x}$$
Clasificación
nth linear constant coeff variation of parameters
nth linear constant coeff variation of parameters Integral