− 2 u 3 v 3 − 3 u 3 v 2 + u 3 v − 4 u 2 v 3 + 12 u 2 v 2 − 9 u 2 v + 2 u 2 + 2 u v 3 − 9 u v 2 + 12 u v − 4 u + v 2 − 3 v + 2 u 3 / 2 v 3 / 2 {\displaystyle -{\frac {2u^{3}v^{3}-3u^{3}v^{2}+u^{3}v-4u^{2}v^{3}+12u^{2}v^{2}-9u^{2}v+2u^{2}+2uv^{3}-9uv^{2}+12uv-4u+v^{2}-3v+2}{u^{3/2}v^{3/2}}}}
