Paul's Online Notes for exponential and logarithm functions:

• Typed notes and a few examples to try.

• 10 practice questions with solutions to check with.

• 18 more practice questions but no solutions to comfirm your work.

Khan Academy has a few resources:

• Video: Derivative of 7^(x²-x) using the chain rule

• Review of differentating exponential functions

• Practice:  Differentiate exponential functions