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