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Let f(x) be a real valued function such ...

Let `f(x)` be a real valued function such that `f(a) = 0`. If `g(x) = (x - a) f (x)` is continuous but notdifferentiable at `x=a and h(x)=(x-a)^2 f(x)` is continuous and differentiable at `x=a`. Then `f(x)`

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