# What is the derivative of #e^3x cos2x#?

##### 1 Answer

Aug 6, 2015

#### Explanation:

To differentiate this function, you can use the product rule and the chain rule. Keep in mind that you have

So, according to the product rule, you can differentiate a function that takes the form

#y = f(x) * g(x)#

by using the formula

#color(blue)(d/dx(y) = [d/dx(f(x))] * g(x) + f(x) * d/dx(g(x)))#

In your case,