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

Let f: (-1, 1) → R be a function defined by \(f\left( x \right) = {\

1.	Let f: (-1, 1) → R be a function defined by \(f\left( x \right) = {\rm{max\;}}\left\{ { - \left\| x \right\|, - \sqrt {1 - {x^2}} } \right\}\). If K be the set of all points at which f is not differentiable, then K has exactly:
A.	Five elements
B.	One elements
C.	Three elements
D.	Two elements
Answer» D. Two elements

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

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