− u 3 v 3 − 3 u 3 v 2 + 3 u 3 v − 3 u 2 v 3 + 9 u 2 v 2 − 8 u 2 v + 3 u 2 + 3 u v 3 − 8 u v 2 + 9 u v − 3 u + 3 v 2 − 3 v + 1 u 3 / 2 v 3 / 2 {\displaystyle -{\frac {u^{3}v^{3}-3u^{3}v^{2}+3u^{3}v-3u^{2}v^{3}+9u^{2}v^{2}-8u^{2}v+3u^{2}+3uv^{3}-8uv^{2}+9uv-3u+3v^{2}-3v+1}{u^{3/2}v^{3/2}}}}
