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