− 2 u v 6 + 2 u v 5 − 2 u v 4 + 2 u v 3 − 2 u v 2 + 2 u v − u − v 7 + 2 v 6 − 2 v 5 + 2 v 4 − 2 v 3 + 2 v 2 − 2 v u v 7 / 2 {\displaystyle {\frac {-2uv^{6}+2uv^{5}-2uv^{4}+2uv^{3}-2uv^{2}+2uv-u-v^{7}+2v^{6}-2v^{5}+2v^{4}-2v^{3}+2v^{2}-2v}{{\sqrt {u}}v^{7/2}}}}
