JEE Advanced 2020 Full Test 7 Paper 2

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Question : 37 of 54

Marks: +1, -0

f(x)=cos‌π(|x|+[x]), then

f is continuous at x=1∕2
f is continuous at x=0
f is differentiable in (-1,0)
f is differentiable in (0,1)

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