Latest KVPY Aptitude Question SOLUTION: Let f : R → R be a differentiable function such that f (a) = 0 = f (b) and f ′(a) f ′(b) > 0 for some a < b. Then the minimum number of roots of f ′(x = 0 in the interval (

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(#M40027242) KVPY question Mental Ability -2010 Keep an EYE

Let f : R → R be a differentiable function such that f (a) = 0 = f (b) and f ′(a) f ′(b) > 0 for some a < b. Then
the minimum number of roots of f ′(x = 0 in the interval (a, b) is-
(A) 3 (B) 2 (C) 1 (D) 0

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