Maxima and MinimaMedium

Question

f(c) is a maximum value of f(x), if -

Options

A.f′(c) = 0, f″(c) > 0
B.f′(c) = 0, f″(c) < 0
C.f′(c) ≠ 0, f″(c) = 0
D.f′(c) < 0, f″(c) > 0

Solution

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