− u 3 v 3 − 2 u 3 v 2 + u 3 v − 3 u 2 v 3 + 7 u 2 v 2 − 5 u 2 v + 2 u 2 + 2 u v 3 − 5 u v 2 + 7 u v − 3 u + v 2 − 2 v + 1 u 3 / 2 v 3 / 2 {\displaystyle -{\frac {u^{3}v^{3}-2u^{3}v^{2}+u^{3}v-3u^{2}v^{3}+7u^{2}v^{2}-5u^{2}v+2u^{2}+2uv^{3}-5uv^{2}+7uv-3u+v^{2}-2v+1}{u^{3/2}v^{3/2}}}}
