- #1

doktorwho

- 181

- 6

## Homework Statement

This is one test question we had today and it asks as to provide examples of functions and intervals. Some may be untrue so we had to identify it. The test isn't graded yet so these are my question answers. Hopefully you'll correct me where necessary and provide a true example.

## Homework Equations

3. The Attempt at a Solution [/B]

a) ##f(x)=x, (-1,1)##

b) ##f(x)=\frac{1}{x}, (0,1)## i had trouble with this and i gave this example.

c) ##f(x)=x, (-1,1)## this example from a) should cover this as well, right?

d) NOT POSSIBLE since it is not defined in some point it can't be differentiable there right?

e) ##f(x)=|x|, (-1,1)##

f) NOT POSSIBLE I just couldn't find an example..

Could me provide feedback on each of these? It would be of massive help, thanks :)