Associated Topics || Dr. Math Home || Search Dr. Math

### Finding the Derivative

```
Date: 07/27/99 at 12:11:11
From: Kayla McLean
Subject: Finding the Derivative

y =  A*(1-e(-cN))* (1-e(-cM))

Can you help me take the derivative of this function with respect to
N? When I did the problem, I left out the A because it is a constant.
I ended up with something like this:

dy/dN = (1 - e(-cN))* (1/e(cM)) + (1 - e(-cM))*(1/e(cN))
```

```
Date: 07/27/99 at 13:30:17
From: Doctor Rob
Subject: Re: Finding the Derivative

Don't leave out the A, but carry it along as factor.  Remember
d(c*u)/dx = c*du/dx, if c is a constant.  Also, (1 - e^(-cM)) is a
constant too, since it does not depend on N.

Now try again.

- Doctor Rob, The Math Forum
http://mathforum.org/dr.math/
```
Associated Topics:
High School Calculus

Search the Dr. Math Library:

 Find items containing (put spaces between keywords):   Click only once for faster results: [ Choose "whole words" when searching for a word like age.] all keywords, in any order at least one, that exact phrase parts of words whole words

Submit your own question to Dr. Math
Math Forum Home || Math Library || Quick Reference || Math Forum Search