\[ \sin (x) \cos (x) y'(x)-y(x)-\sin ^3(x)=0 \] ✓ Mathematica : cpu = 0.0292629 (sec), leaf count = 15
\[\left \{\left \{y(x)\to c_1 \tan (x)-\sin (x)\right \}\right \}\] ✓ Maple : cpu = 0.017 (sec), leaf count = 13
\[ \left \{ y \left ( x \right ) =\tan \left ( x \right ) \left ( -\cos \left ( x \right ) +{\it \_C1} \right ) \right \} \]