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The function $f (x) = (e^{x} - 1) \sin \frac{πx}{2} |x (x - 1) (x - 2) (x - 3)|$ is not differentiable at x

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{0,1,2, 2}

{1, 3}

{0,2, 3}

{1,2, 2}

answer is D.

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Detailed Solution

$x | x |$ is differentiable at x = 0 , hence 1, 3 are points of non differentiability.

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