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Let f: (-5,5) rarr R be a differentiable...

Let `f: (-5,5) rarr R` be a differentiable function with f(4) = 1, `f^(')(4) = 1, f(0) = -1` and f^(')(0) = 1`, If `g(x) = f(2f^(2)(x)+2))^(2)`, then ` - g^(')(0)` equals

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