# How to differentiate y=e^x

1. Nov 8, 2007

### JasonX

please explain in more detail on how we come up with the answers below. Thanks in advance!
(formulas much appreciated)

Differentiate:
1. 1
y=e^x
=e^x

1. 2
y=lnx
=1/x

Last edited: Nov 8, 2007
2. Nov 8, 2007

3. Nov 8, 2007

### danago

You should be careful of the notation you use. y = ln x = 1/x isnt true. You would be more correct in saying that if y = ln x, then y' = 1/x. Just thought id point that out.

4. Nov 8, 2007