Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Let 
Then which one of the following is true?
A
f is differentiable at 
and 
and B
f is differentiable at 
but not at 
but not at C
f is differentiable at 
but not at 
but not at D
f is neither differentiable at 
nor at 
nor at
Text Solution
Verified by ExpertsThe correct answer is:
B
We have 
which does not exist.
∴ 
is not differentiable at 
Also 
f is differentiable at 
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