Ecuación diferencial y'''+3y''+3y'+y=sin(x)
El profesor se sorprenderá mucho al ver tu solución correcta😉
Solución
cos(x) sin(x) -x
y(x) = - ------ - ------ + (C1 + x*(C2 + C3*x))*e
4 4
$$y{\left(x \right)} = \left(C_{1} + x \left(C_{2} + C_{3} x\right)\right) e^{- x} - \frac{\sin{\left(x \right)}}{4} - \frac{\cos{\left(x \right)}}{4}$$
Clasificación
nth linear constant coeff undetermined coefficients
nth linear constant coeff variation of parameters
nth linear constant coeff variation of parameters Integral