Feb
22
2017
0
Question of the day0005
By admin
What is the derivative of f(x) = \(\mid x \mid\) at x = 0 ?

1

1

0

Does not exist
Solution:
Left side: Lf’(0) = 1
Right side: Rf’(0) = 1
Since Lf’(0) not equal to Rf’(0)
So, derivative of f (x) at x = 0 does not exist.
Ans: D