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The value of 'c' in Rolle's theorem for ...

The value of 'c' in Rolle's theorem for `f(x) = log ((x^(2) + ab)/(x(a+b)))` in (a,b) where `a gt 0` is

A

A.M. of a,b

B

G.M. of a,b

C

H.M. of a,b

D

`(1)/(a) + ( 1)/(b)`

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The correct Answer is:
B
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