2 u v 3 − 6 u v 2 + 6 u v − 3 u − 3 v 3 + 6 v 2 − 6 v + 2 u v 3 / 2 {\displaystyle {\frac {2uv^{3}-6uv^{2}+6uv-3u-3v^{3}+6v^{2}-6v+2}{{\sqrt {u}}v^{3/2}}}}
