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Let f(x)=(x-a)^2+(x-b)^2+(x-c)^2dot Then...

Let `f(x)=(x-a)^2+(x-b)^2+(x-c)^2dot` Then, `f(x)` has a minimum at `x=` `(a+b+c)/3` (b) `1/2` (c) `1/8` (d) none of these

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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A
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