fun-lim

Question: If $f(r)=\pi {{r}^{2}}$ , then $\underset{h\to 0}{\mathop{\lim }}\,\frac{f(r+h)-f(r)}{h}=$



1) $\pi {{r}^{2}}$
2) $2\pi r$
3) $2\pi $
4) $2\pi {{r}^{2}}$
Solution: Explanation: No Explanation
Limits

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