− u v 5 − 4 u v 4 + 8 u v 3 − 8 u v 2 + 6 u v − 2 u − 2 v 5 + 6 v 4 − 8 v 3 + 8 v 2 − 4 v + 1 u v 5 / 2 {\displaystyle -{\frac {uv^{5}-4uv^{4}+8uv^{3}-8uv^{2}+6uv-2u-2v^{5}+6v^{4}-8v^{3}+8v^{2}-4v+1}{{\sqrt {u}}v^{5/2}}}}
