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Let f(x)a n dg(x) be two differentiable ...

Let `f(x)a n dg(x)` be two differentiable functions in `Ra n df(2)=8,g(2)=0,f(4)=10 ,a n dg(4)=8.` Then prove that `g^(prime)(x)=4f^(prime)(x)` for at least one `x in (2,4)dot`

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