HCU MCA 2016 Paper

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Question : 64 of 75

Marks: +1, -0

Let f : R →R be the function defined by f(x) =

{\sinx/{| x | +\cos x}

Then;

f is not differentiable at x = 0
f is differentiable at all x ∈ R
f is differentiable at x = 0 but f’ is not continuous at x = 0
f is not differentiable at $x-π/2$

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