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