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Let f(x) be a polynomial function of sec...

Let f(x) be a polynomial function of second degree such that f(1) = f(-1). If a, b, c are in A.P., then f'(a), f'(b) and f'(c) are in :

A

A.P.

B

G.P.

C

H.P.

D

A.G.P.

Text Solution

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The correct Answer is:
A
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