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