( u − 1 ) ( v − 1 ) ( w − 1 ) ( w 4 − w 3 + w 2 − w + 1 ) u v w 5 / 2 {\displaystyle {\frac {(u-1)(v-1)(w-1)\left(w^{4}-w^{3}+w^{2}-w+1\right)}{{\sqrt {u}}{\sqrt {v}}w^{5/2}}}}
