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