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