I need some help solving these derivative problems:

1. F(x)= 3rd root of(x)-[1/3rd root of(x)]

For this one I got: 1/3 x - 3rd root of(9)

2. (s^2+s+1)^4 * (s-2)^7

I tried doing this one but it got out of hand and messy.

Any help would be great.

Printable View

- Feb 20th 2009, 07:55 PMroksteadyHelp with Derivatives
I need some help solving these derivative problems:

1. F(x)= 3rd root of(x)-[1/3rd root of(x)]

For this one I got: 1/3 x - 3rd root of(9)

2. (s^2+s+1)^4 * (s-2)^7

I tried doing this one but it got out of hand and messy.

Any help would be great. - Feb 20th 2009, 08:01 PMJoshHJ
Before I work this through, tell me if this is what the equation is:

and

- Feb 21st 2009, 04:29 PMroksteady
yep that's them.

For future reference how do you do that (make math symbols visible and all)

-thankx - Feb 21st 2009, 05:28 PMJoshHJ
Just use this tutorial: http://www.mathhelpforum.com/math-he...-tutorial.html

Now to help you with your first problem:

From here, you will want to use the power rule so:

Now for the second you will need to use the chain rule and the product rule.

- Feb 22nd 2009, 03:09 AMmr fantastic
- Feb 27th 2009, 09:01 PMmr fantastic
Clearly not, since you re-posted the cube root one ....

Quote:

Originally Posted by**roksteady**

Note: The derivative of the first term is done as has already been shown in this thread.

However, I'm glad to see you learned some latex (Clapping)