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Let f(x) be a twice differentiable funct...

Let `f(x)` be a twice differentiable function for all real values of `x` and satisfies `f(1)=1,f(2)=4,f(3)=9.` Then which of the following is definitely true? `f^(x)=2AAx in (1,3)` `f^(x)=f(x)=5forsom ex in (2,3)` `f^(x)=3AAx in (2,3)` `f^(x)=2forsom ex in (1,3)`

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