\[ \boxed { x{\frac {\rm d}{{\rm d}x}}y \left ( x \right ) -y \left ( x \right ) -{x}^{2}\sin \left ( x \right ) =0} \]
Mathematica: cpu = 0.011501 (sec), leaf count = 15 \[ \left \{\left \{y(x)\to c_1 x-x \cos (x)\right \}\right \} \]
Maple: cpu = 0.0 (sec), leaf count = 13 \[ \left \{ y \left ( x \right ) =-\cos \left ( x \right ) x+x{\it \_C1} \right \} \]