( w − 1 ) ( u 2 ( − v 2 ) + u 2 v w 2 − 2 u 2 v w + 2 u 2 v − u 2 w 2 + u 2 w − u 2 + u v 2 w 2 − 2 u v 2 w + 2 u v 2 − 3 u v w 2 + 6 u v w − 3 u v + 2 u w 2 − 2 u w + u − v 2 w 2 + v 2 w − v 2 + 2 v w 2 − 2 v w + v − w 2 ) u v w 3 / 2 {\displaystyle {\frac {(w-1)\left(u^{2}\left(-v^{2}\right)+u^{2}vw^{2}-2u^{2}vw+2u^{2}v-u^{2}w^{2}+u^{2}w-u^{2}+uv^{2}w^{2}-2uv^{2}w+2uv^{2}-3uvw^{2}+6uvw-3uv+2uw^{2}-2uw+u-v^{2}w^{2}+v^{2}w-v^{2}+2vw^{2}-2vw+v-w^{2}\right)}{uvw^{3/2}}}}