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