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