JEE Mains · Maths · STD 12 - 5. continuity and differentiation
Let \(f : (-1, 1) \to R\) be a function defined by \(f\left( x \right) = \left\{ { - \left| x \right|, - \sqrt {1 - {x^2}} } \right\}\). if \(K\) be the set of all points at which \(f\) is not differentiable, then \(K\) has exactly
- A five elements
- B one element
- C three elements
- D two elements
Answer & Solution
Correct Answer
(C) three elements
Step-by-step Solution
Detailed explanation
\(A, B, C\) are sharp edges
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