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if f(x) is differentiable function such ...

if f(x) is differentiable function such that f(1) = sin 1, f (2)= sin 4 and f(3) = sin 9, then the minimum number of distinct roots of f'(x) = 2x `cosx^(2)` in (1,3) is `"_______"`

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RESONANCE DPP ENGLISH-JEE MAINS-All Questions
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