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