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