Sr Examen

Ecuación diferencial y"'+3y"-y'-3y=e^x

El profesor se sorprenderá mucho al ver tu solución correcta😉

v

Para el problema de Cauchy:

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

Gráfico:

interior superior

Solución

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