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