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