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