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Ecuación diferencial y'''-y=xe^x

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v

Para el problema de Cauchy:

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

Gráfico:

interior superior

Solución

Ha introducido [src]
          3             
         d             x
-y(x) + ---(y(x)) = x*e 
          3             
        dx              
$$- y{\left(x \right)} + \frac{d^{3}}{d x^{3}} y{\left(x \right)} = x e^{x}$$
-y + y''' = x*exp(x)
Respuesta [src]
                                            -x                    
       /      /    ___\         /    ___\\  ---   /          2\   
       |      |x*\/ 3 |         |x*\/ 3 ||   2    |     x   x |  x
y(x) = |C1*sin|-------| + C2*cos|-------||*e    + |C3 - - + --|*e 
       \      \   2   /         \   2   //        \     3   6 /   
$$y{\left(x \right)} = \left(C_{1} \sin{\left(\frac{\sqrt{3} x}{2} \right)} + C_{2} \cos{\left(\frac{\sqrt{3} x}{2} \right)}\right) e^{- \frac{x}{2}} + \left(C_{3} + \frac{x^{2}}{6} - \frac{x}{3}\right) e^{x}$$
Clasificación
nth linear constant coeff undetermined coefficients
nth linear constant coeff variation of parameters
nth linear constant coeff variation of parameters Integral