1.

f: R rarr R, f(x) is a differentiable function such that all its successive derivatives exist. f'(x) can be zero at discrete points only and f(x)f''(x) le 0 AA x in R If f(a)=0, then which of the following is correct

Answer»

`f(a+h) f''(a-h) LT 0`
`f(a+h) f''(a-h) GT 0`
`f(a+h) f''(a-h) lt 0`
`f(a+h) f''(a-h) lt 0`

ANSWER :B


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