− 2 u 3 v 4 − 2 u 3 v 3 + u 3 v 2 + u 2 v 5 − 4 u 2 v 4 + 7 u 2 v 3 − 5 u 2 v 2 + 2 u 2 v + 2 u v 4 − 5 u v 3 + 7 u v 2 − 4 u v + u + v 3 − 2 v 2 + 2 v u 3 / 2 v 5 / 2 {\displaystyle -{\frac {2u^{3}v^{4}-2u^{3}v^{3}+u^{3}v^{2}+u^{2}v^{5}-4u^{2}v^{4}+7u^{2}v^{3}-5u^{2}v^{2}+2u^{2}v+2uv^{4}-5uv^{3}+7uv^{2}-4uv+u+v^{3}-2v^{2}+2v}{u^{3/2}v^{5/2}}}}
