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