How to find a derative by definition for such a function:

Results 1 to 4 of 4

- June 11th 2010, 03:20 AM #1

- Joined
- May 2010
- Posts
- 8

- June 11th 2010, 03:26 AM #2

- June 11th 2010, 03:35 AM #3

- Joined
- May 2010
- Posts
- 8

- June 11th 2010, 05:39 AM #4
You need to use the product rule and the chain rule...

Chain rule: .

Product rule: .

So in your case:

.

Can you see that this is a product of functions? So you need to use the product rule with and .

So

.

Now to find you need to use the chain rule twice...

Can you go from here?