\[ x y''(x)-(x+1) y'(x)+y(x)=0 \] ✓ Mathematica : cpu = 0.0187737 (sec), leaf count = 20
\[\left \{\left \{y(x)\to c_1 e^x+c_2 (-x-1)\right \}\right \}\]
✓ Maple : cpu = 0.021 (sec), leaf count = 13
\[ \left \{ y \left ( x \right ) ={\it \_C2}\,{{\rm e}^{x}}+{\it \_C1}\,x+{\it \_C1} \right \} \]