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