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Question
Let f(x) = (x \[-\] a)2 + (x \[-\] b)2 + (x \[-\] c)2. Then, f(x) has a minimum at x = _____________ .
Options
\[\frac{a + b + c}{3}\]
\[\sqrt[3]{abc}\]
\[\frac{3}{\frac{1}{a} + \frac{1}{b} + \frac{1}{c}}\]
none of these
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Solution
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