\[ y^{(3)}(x)-2 y''(x)-3 y'(x)+10 y(x)=0 \] ✓ Mathematica : cpu = 0.00620957 (sec), leaf count = 34
\[\left \{\left \{y(x)\to c_3 e^{-2 x}+c_1 e^{2 x} \sin (x)+c_2 e^{2 x} \cos (x)\right \}\right \}\] ✓ Maple : cpu = 0.013 (sec), leaf count = 27
\[ \left \{ y \left ( x \right ) ={\it \_C1}\,{{\rm e}^{-2\,x}}+{\it \_C2}\,{{\rm e}^{2\,x}}\sin \left ( x \right ) +{\it \_C3}\,{{\rm e}^{2\,x}}\cos \left ( x \right ) \right \} \]