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