The function given by y = ||x| - 1| is differentiable for all real num – McqOptions

MCQOPTIONS

1.	The function given by y = \|\|x\| - 1\| is differentiable for all real numbers except the points____.
A.	{0, 1, –1}
B.	± 1
C.	1
D.	-1
Answer» B. ± 1

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