− 3 u 3 v 3 − 3 u 3 v 2 + u 3 v − 3 u 2 v 3 + 8 u 2 v 2 − 5 u 2 v + u 2 + u v 3 − 5 u v 2 + 8 u v − 3 u + v 2 − 3 v + 3 u 3 / 2 v 3 / 2 {\displaystyle -{\frac {3u^{3}v^{3}-3u^{3}v^{2}+u^{3}v-3u^{2}v^{3}+8u^{2}v^{2}-5u^{2}v+u^{2}+uv^{3}-5uv^{2}+8uv-3u+v^{2}-3v+3}{u^{3/2}v^{3/2}}}}
