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Prove that function y=(x-a(1))^(2)+(x...

Prove that function
`y=(x-a_(1))^(2)+(x-a_(2))^(2)+...+(x-a_(n))^(2)` is minimum when `x=(1)/(n)(a_(1)+a_(2)+...+a_(n))`.

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CHHAYA PUBLICATION-MAXIMA AND MINIMA -EXERCISE Short Answer Type Questions
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