fun-lim

Question: If $f(x)=\frac{1}{\sqrt{x+2\sqrt{2x-4}}}+\frac{1}{\sqrt{x-2\sqrt{2x-4}}}$ for $x>2$, then $f(11)=$



1) 7/6
2) 5/6
3) 6/7
4) 5/7
Solution: Explanation: No Explanation
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