Okey, i'm confused again.... So this function doesn't have a critical number. I should choose an answer E) as none of these???
Hello,
I'm only curious and this post has nothing to do with Samantha's problem.
If I take the definition I get:
1. c belongs to the domain
2. A critical number exists if f'(x) doesn't exist.
In my opinion this takes place with functions like: $\displaystyle f(x) = | x |$
1. $\displaystyle 0 \in \mathbb{R}$
2. $\displaystyle f(0) = 0$ exists
3. f'(0) doesn't exist. Thus x = 0 is a critical number
Do I get this right?