− 7 u v 2 − 10 u v + 4 u + 4 v 3 − 10 v 2 + 7 v u v 3 / 2 {\displaystyle -{\frac {7uv^{2}-10uv+4u+4v^{3}-10v^{2}+7v}{{\sqrt {u}}v^{3/2}}}}
