Continuity and DifferentiabilityHard

Question

Let ƒ(x + y) = ƒ(x) ƒ(y) for all x, y, ∈ R, Suppose that ƒ(3) = 3 and ƒ′ (0) = 11 then ƒ′(3) is equal to-

Options

A.22
B.44
C.28
D.None of these

Solution

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