Mathematics
Let \(f(x)\) be a polynomial function of second degree. If
\(f(1) = f( - 1)\) and \(a,b,c\) are in A.P., then
\(f^{'}(a),f^{'}(b)\) and \(f^{'}(c)\) are in
A
G.P.
B
H.P
C
Arithmetic-Geometric Progression
D
A.P.
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