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