KVPY Sample Paper KVPY Stream-SX Model Paper-29

  • question_answer
    Let \[f:(-1,1)\to R\] be a function defined by\[f(x)=max\left\{ -|x|,-\sqrt{1-{{x}^{2}}} \right\}.\] If K be the set of all points at which / is not differentiable, then K has exactly:

    A) five elements

    B) one element

    C) three elements   

    D) two elements

    Correct Answer: C

    Solution :

    A, B, C are sharp edges

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