# How do I find the derivative of #3e^(-12t) #?

##### 1 Answer

Jan 2, 2016

You can use the chain rule.

#### Explanation:

The 3 is a constant, it can be kept out:

It's a mixed function. The outer function is the exponential, and the inner is a polynomial (sort of):

**Deriving:**

If the exponent was a simple variable and not a function, we would simply differentiate

Which means you differentiate