Question

Is the function shown in the link diffrentiable at all points.

http://www.twiddla.com/929345

Answer 1

The second graph is just what I think the derivative graph would look like. There doesn't seem to be any sharp turns which leads me to assume that the function is diffrentiable at all points??

Answer 2

looks good to me :)

Answer 3

Thanks, just wanted to make sure.

Answer 4

I don't know about the endpoints though, since the derivative from the left does not exist on the left side, if there is a given interval
similarly for the right