If we're calculating a surface integral and do a parametrization by parametrizing the surface with some $\vec{r}(u,v)$, how do we know whether $\vec{r}_u\times\vec{r}_v$ or $\vec{r}_v\times\vec{r}_u$ gives the outward pointing normal vector?
2026-05-17 04:07:46.1778990866
Outward Pointing Normal Vector in a Surface Integral
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