El profesor se sorprenderá mucho al ver tu solución correcta😉
3 d d - --(y(x)) + ---(y(x)) + y(x) = 2*sin(3*x) dx 3 dx
y - y' + y''' = 2*sin(3*x)
/ ____________ 3 ____ \ / ____________ 3 ____ \ / ____________ 3 ____ \ | 3 ____ 3 / ____ 2*\/ 18 | |3 ____ 3 / ____ 2*\/ 18 | |3 ____ 3 / ____ 2*\/ 18 | x*|- \/ 12 *\/ 9 + \/ 69 - ---------------| x*|\/ 12 *\/ 9 + \/ 69 + ---------------| / / ____________\\ / / ____________\\ x*|\/ 12 *\/ 9 + \/ 69 + ---------------| | ____________| | ____________| | 3 ___ 6 ___ | 6 3 ___ 2/3 3 / ____ || | 3 ___ 6 ___ | 6 3 ___ 2/3 3 / ____ || | ____________| | 3 / ____ | | 3 / ____ | |x*\/ 2 *\/ 3 *|--------------- - \/ 2 *3 *\/ 9 + \/ 69 || |x*\/ 2 *\/ 3 *|--------------- - \/ 2 *3 *\/ 9 + \/ 69 || | 3 / ____ | \ \/ 9 + \/ 69 / \ \/ 9 + \/ 69 / | | ____________ || | | ____________ || \ \/ 9 + \/ 69 / ---------------------------------------------- -------------------------------------------- | |3 / ____ || | |3 / ____ || -------------------------------------------- 2*sin(3*x) 60*cos(3*x) 6 12 | \\/ 9 + \/ 69 /| | \\/ 9 + \/ 69 /| 12 y(x) = ---------- + ----------- + C3*e + C1*e *sin|------------------------------------------------------------| + C2*cos|------------------------------------------------------------|*e 901 901 \ 12 / \ 12 /