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