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