− ( v 2 − v + 1 ) ( u v + 1 ) ( u v − u + 1 ) ( u v − v + 1 ) u 3 / 2 v 5 / 2 {\displaystyle -{\frac {\left(v^{2}-v+1\right)(uv+1)(uv-u+1)(uv-v+1)}{u^{3/2}v^{5/2}}}}
