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