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