## Question

###### Let $f(x)$ be a polynomial function of second degree. If $f(1)=f(-1)$ and $a_{1}, a_{2}, a_{3}$ are in A. P., then $f^{prime}left(a_{1}ight)$, $f^{prime}left(a_{2}ight), f^{prime}left(a_{3}ight)$ are in(A) A.P.(B) G.P.(C) H.P.(D) None of these

Let $f(x)$ be a polynomial function of second degree. If $f(1)=f(-1)$ and $a_{1}, a_{2}, a_{3}$ are in A. P., then $f^{prime}left(a_{1} ight)$, $f^{prime}left(a_{2} ight), f^{prime}left(a_{3} ight)$ are in (A) A.P. (B) G.P. (C) H.P. (D) None of these

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