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