Sr Examen

Ecuación diferencial x^3y"'+6x^2y"+7xy'+y=xln(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]
     3                2                                       
 3  d             2  d              d                         
x *---(y(x)) + 6*x *---(y(x)) + 7*x*--(y(x)) + y(x) = x*log(x)
     3                2             dx                        
   dx               dx                                        
$$x^{3} \frac{d^{3}}{d x^{3}} y{\left(x \right)} + 6 x^{2} \frac{d^{2}}{d x^{2}} y{\left(x \right)} + 7 x \frac{d}{d x} y{\left(x \right)} + y{\left(x \right)} = x \log{\left(x \right)}$$
x^3*y''' + 6*x^2*y'' + 7*x*y' + y = x*log(x)
Respuesta [src]
                                      2                
                              2      x *(-3 + 2*log(x))
       C1 + C2*log(x) + C3*log (x) + ------------------
                                             16        
y(x) = ------------------------------------------------
                              x                        
$$y{\left(x \right)} = \frac{C_{1} + C_{2} \log{\left(x \right)} + C_{3} \log{\left(x \right)}^{2} + \frac{x^{2} \left(2 \log{\left(x \right)} - 3\right)}{16}}{x}$$
Clasificación
nth linear euler eq nonhomogeneous undetermined coefficients
nth linear euler eq nonhomogeneous variation of parameters
nth linear euler eq nonhomogeneous variation of parameters Integral