I am going through a practice exam and the following question has me perplexed:

Determine the derivative, with respect to the variable x, of each function below:

A) f(x) = e^x/(1+e^x)

B) f(x) = ln(1+x^2)

I understand the principles of functions, however the "e" is throwing me off in relation. What formulas should I use to solve and what steps to get the correct answers?

Thank you,

Matty