1
WB JEE 2017
MCQ (More than One Correct Answer)
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Let f : R $$ \to $$ R be twice continuously differentiable. Let f(0) = f(1) = f'(0) = 0. Then,
A
f''(x) $$ \ne $$ 0 for all x
B
f''(c) = 0 for some c $$ \in $$ R
C
f''(x) $$ \ne $$ 0 if x $$ \ne $$ 0
D
f'(x) > 0 for all x
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