Suppose That I am trying to use the maximum principle on $\frac{1}{f(x)}$ in order to use the minimum principle over $f(x)$. How do I deal with points in which $f(x) = 0$?
I didn't encounter a question like that, I am just wondering.
Thanks!
2026-03-31 14:28:11.1774967291
hHow to use maximum principle of $\frac{1}{f}$ in points where $f(x) = 0$
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