1Also Given:
if f:R---->R & f(x) is differentiable function such that all its succesive derivatives exists f'(x) can be taken 0at discrete points only & f(x).f''(x)≤ 0 for all x εR
then do the above question
Q3 if f'(x)≠0, the max number of real roots of f''(x)=0 is/are
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