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Ecuación diferencial y’’’’+8*y’’+16*y=cos(2*x)

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Para el problema de Cauchy:

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

Gráfico:

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Solución

Ha introducido [src]
    2                     4                 
   d                     d                  
8*---(y(x)) + 16*y(x) + ---(y(x)) = cos(2*x)
    2                     4                 
  dx                    dx                  
$$16 y{\left(x \right)} + 8 \frac{d^{2}}{d x^{2}} y{\left(x \right)} + \frac{d^{4}}{d x^{4}} y{\left(x \right)} = \cos{\left(2 x \right)}$$
16*y + 8*y'' + y'''' = cos(2*x)
Respuesta [src]
                              /       /     x \\         
y(x) = (C1 + C2*x)*sin(2*x) + |C3 + x*|C4 - --||*cos(2*x)
                              \       \     32//         
$$y{\left(x \right)} = \left(C_{1} + C_{2} x\right) \sin{\left(2 x \right)} + \left(C_{3} + x \left(C_{4} - \frac{x}{32}\right)\right) \cos{\left(2 x \right)}$$
Clasificación
nth linear constant coeff undetermined coefficients
nth linear constant coeff variation of parameters
nth linear constant coeff variation of parameters Integral