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