Question 112
If $a$ and $b$ are positive real numbers, what is the minimum value of the expression
$$
\sqrt{a+b}\left(\frac{1}{\sqrt{a}}+\frac{1}{\sqrt{b}}\right) ?
$$
$$
\sqrt{a+b}\left(\frac{1}{\sqrt{a}}+\frac{1}{\sqrt{b}}\right) ?
$$
Math Olympiad Vault · MathNet 2008-part-03 — 165 problems (EN–VI)