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Homework Statement
Show that the force field [itex]\vec{F}=f(r)\vec{r}[/itex] is conservative. [itex]f(r)[/itex] is a scalar field. [itex]r=|\vec{r}|[/itex]
Homework Equations
[itex]curl(\vec{F})=0[/itex]
The Attempt at a Solution
I tried calculating the cross product, in cartesian coordinates, but how do i treat f(r) when doing the partial derivatives?
Would it be better to use spherical coordinates?