− 2 u 3 v 3 − 3 u 3 v 2 + u 3 v − 3 u 2 v 3 + 5 u 2 v 2 − 4 u 2 v + u 2 + u v 3 − 4 u v 2 + 5 u v − 3 u + v 2 − 3 v + 2 u 3 / 2 v 3 / 2 {\displaystyle -{\frac {2u^{3}v^{3}-3u^{3}v^{2}+u^{3}v-3u^{2}v^{3}+5u^{2}v^{2}-4u^{2}v+u^{2}+uv^{3}-4uv^{2}+5uv-3u+v^{2}-3v+2}{u^{3/2}v^{3/2}}}}
