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