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Ecuación diferencial y''-2y'+3y=x^3+sin(x)

El profesor se sorprenderá mucho al ver tu solución correcta😉

v

Para el problema de Cauchy:

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

Gráfico:

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Solución

Ha introducido [src]
                          2                    
    d                    d           3         
- 2*--(y(x)) + 3*y(x) + ---(y(x)) = x  + sin(x)
    dx                    2                    
                        dx                     
$$3 y{\left(x \right)} - 2 \frac{d}{d x} y{\left(x \right)} + \frac{d^{2}}{d x^{2}} y{\left(x \right)} = x^{3} + \sin{\left(x \right)}$$
3*y - 2*y' + y'' = x^3 + sin(x)
Respuesta [src]
               3                        2                                               
         8    x    cos(x)   sin(x)   2*x    2*x   /      /    ___\         /    ___\\  x
y(x) = - -- + -- + ------ + ------ + ---- + --- + \C1*sin\x*\/ 2 / + C2*cos\x*\/ 2 //*e 
         27   3      4        4       3      9                                          
$$y{\left(x \right)} = \frac{x^{3}}{3} + \frac{2 x^{2}}{3} + \frac{2 x}{9} + \left(C_{1} \sin{\left(\sqrt{2} x \right)} + C_{2} \cos{\left(\sqrt{2} x \right)}\right) e^{x} + \frac{\sin{\left(x \right)}}{4} + \frac{\cos{\left(x \right)}}{4} - \frac{8}{27}$$
Clasificación
nth linear constant coeff undetermined coefficients
nth linear constant coeff variation of parameters
nth linear constant coeff variation of parameters Integral