\[ -3 x^3+x^2 y''(x)-x y'(x)+y(x)=0 \] ✓ Mathematica : cpu = 0.0148786 (sec), leaf count = 23
\[\left \{\left \{y(x)\to c_1 x+c_2 x \log (x)+\frac {3 x^3}{4}\right \}\right \}\]
✓ Maple : cpu = 0.012 (sec), leaf count = 18
\[ \left \{ y \left ( x \right ) ={\it \_C2}\,x+x\ln \left ( x \right ) {\it \_C1}+{\frac {3\,{x}^{3}}{4}} \right \} \]