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