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If f(x) is a polynomial Satisfying f(x) . f(1/x) = f(x) + f(1/x) and f(3) = 28 then f(4) =.......

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If f(x) is a polynomial Satisfying f(x) . f(1/x) = f(x) + f(1/x) and f(3) = 28 then f(4) =....... 

(a) 65 

(b) 17 

(c) 63 

(d) 15

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1 Answer

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Best answer

The correct option (a) 65

Explanation:

Let f(x) = a0xn + a1xn–1 + .............. + an–1 x + an be a polynomial of degree n.

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