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Questions  

 The function f(x)=max{1x,1+x,2},x(,) is 

a
continuous at all points
b
differentiable at all points
c
differentiable at all points except at x=1&x=−1&x=0
d
continuous at all points except at x=1&x=−1 , where it is discontinuous

detailed solution

Correct option is A

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