Ecuación diferencial y’’’+9y’=cos(3x)
El profesor se sorprenderá mucho al ver tu solución correcta😉
Solución
/ x \
y(x) = C1 + C3*sin(3*x) + |C2 - --|*cos(3*x)
\ 18/
$$y{\left(x \right)} = C_{1} + C_{3} \sin{\left(3 x \right)} + \left(C_{2} - \frac{x}{18}\right) \cos{\left(3 x \right)}$$
Clasificación
nth linear constant coeff undetermined coefficients
nth linear constant coeff variation of parameters
nth order reducible
nth linear constant coeff variation of parameters Integral