− 2 u 3 v 3 − 4 u 3 v 2 + 3 u 3 v − u 3 − 5 u 2 v 3 + 13 u 2 v 2 − 11 u 2 v + 4 u 2 + 4 u v 3 − 11 u v 2 + 13 u v − 5 u − v 3 + 3 v 2 − 4 v + 2 u 3 / 2 v 3 / 2 {\displaystyle -{\frac {2u^{3}v^{3}-4u^{3}v^{2}+3u^{3}v-u^{3}-5u^{2}v^{3}+13u^{2}v^{2}-11u^{2}v+4u^{2}+4uv^{3}-11uv^{2}+13uv-5u-v^{3}+3v^{2}-4v+2}{u^{3/2}v^{3/2}}}}
