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