Question

derivative question: State where y=abs(4+x) is not differentiable and then use the alternative form for the derivative at a point to show that it is not differentiable.

Answer 1

The function will not be differentiable at a location where the function is not "smooth".
So do you see any point along the curve where there might be a sharp corner causing a problem?

Answer 2

Oh also: \(\Large \color{royalblue}{\text{Welcome to OpenStudy! :)}}\)