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Let S={t in R: f(x)=|x-pi|(e^(|x|)-1)sin...

Let `S={t in R: f(x)=|x-pi|(e^(|x|)-1)sin|x|` is not differentiable at t} Then the set S is equal to: (1) `phi` (2) {0} (3) `{pi}` (4) `{0,pi}`

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JEE MAINS PREVIOUS YEAR ENGLISH-JEE MAINS-All Questions
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