I have a scalar function $f = \lvert \underline{r} \rvert^n$ where $\underline{r} = (x,y,z)$. I have to find the gradient of the scalar function $f$ as a function of $\underline{r}$. This seems really abstract to me. How do I start?
2026-03-25 23:25:28.1774481128
Gradient of a scalar function?
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Start by making it less abstract.
Find the gradient of the following function using chain rule.
$$f(x,y,z) = \left(x^2+y^2+z^2\right)^{n/2}$$