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