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