Limit Continuity and Differentiability 7 Question 20
20. Let be a function defined by . The set of all points, where is not differentiable, is
(a)
(b)
(c)
(d)
(2001, 2M)
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Answer:
Correct Answer: 20. (a)
Solution:
- Since,
On differentiating both sides, we get
Again, differentiating, we get
Again, differentiating, we get