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