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