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