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Let f be a differentiable function on R and satisfies f(x+y)=f(x)+f(y) ∀ x, y ϵ R. If f′(0)=2, then the value of f(4) is

Answer» Let f be a differentiable function on R and satisfies f(x+y)=f(x)+f(y) x, y ϵ R. If f(0)=2, then the value of f(4) is


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