− 3 u v 2 − 4 u v + 2 u + 2 v 3 − 4 v 2 + 3 v u v 3 / 2 {\displaystyle -{\frac {3uv^{2}-4uv+2u+2v^{3}-4v^{2}+3v}{{\sqrt {u}}v^{3/2}}}}
