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Let f(x) = (x-p)^2+ (x -q)^2 + (x - r)^...

Let `f(x) = (x-p)^2+ (x -q)^2 + (x - r)^2`. Then `f(x)` has a minimum at `x = lambda`, where `lambda` is equal to

A

`(p+q+r)/(3)`

B

`root(3)(pqr)`

C

`(3)/((1)/(p)+(1)/(q)+(1)/(r))`

D

`(3)/(p+q+r)`

Text Solution

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The correct Answer is:
A
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