Question

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 1

Answer:

Step-by-step explanation:

f(x) = | |x| - 1 | is differentiable everywhere but at - 1 , 0 and 1.