− u 3 v 3 − 3 u 3 v 2 + 4 u 3 v − 2 u 3 − 3 u 2 v 3 + 8 u 2 v 2 − 8 u 2 v + 4 u 2 + 4 u v 3 − 8 u v 2 + 8 u v − 3 u − 2 v 3 + 4 v 2 − 3 v + 1 u 3 / 2 v 3 / 2 {\displaystyle -{\frac {u^{3}v^{3}-3u^{3}v^{2}+4u^{3}v-2u^{3}-3u^{2}v^{3}+8u^{2}v^{2}-8u^{2}v+4u^{2}+4uv^{3}-8uv^{2}+8uv-3u-2v^{3}+4v^{2}-3v+1}{u^{3/2}v^{3/2}}}}
