( u − 1 ) ( v − 1 ) ( v 6 − v 5 + v 4 − v 3 + v 2 − v + 1 ) u v 7 / 2 {\displaystyle {\frac {(u-1)(v-1)\left(v^{6}-v^{5}+v^{4}-v^{3}+v^{2}-v+1\right)}{{\sqrt {u}}v^{7/2}}}}
