− ( w − 1 ) ( x − 1 ) ( − u v + u x 2 − u x + u + v x 2 − v x + v − x 2 ) u v w x 3 / 2 {\displaystyle -{\frac {(w-1)(x-1)\left(-uv+ux^{2}-ux+u+vx^{2}-vx+v-x^{2}\right)}{{\sqrt {u}}{\sqrt {v}}{\sqrt {w}}x^{3/2}}}}
