− u 3 v 2 − u 3 v + u 2 v 3 − 4 u 2 v 2 + 3 u 2 v − u 2 − u v 3 + 3 u v 2 − 4 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}-4u^{2}v^{2}+3u^{2}v-u^{2}-uv^{3}+3uv^{2}-4uv+u-v^{2}+v}{u^{3/2}v^{3/2}}}}
