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