Derivative of a natural log

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1. Mar 22, 2015

thegoosegirl42

1. The problem statement, all variables and given/known data
I posted a picture of it and my attempt it is number 3

2. Relevant equations

3. The attempt at a solution
I tried using log properties and I am not sure what went wrong and how to arrive at the correct answer.

Mod note: Messy, disorganized image deleted.

Last edited by a moderator: Mar 22, 2015
2. Mar 22, 2015

my2cts

log derivative and chain rule should get you there.

3. Mar 22, 2015

vela

Staff Emeritus
You need to brush up on your algebra. $\sqrt[3]{x}$ doesn't mean $(\sqrt{x})^3$; it means $x^{1/3}$. Try again.

4. Mar 22, 2015

SteamKing

Staff Emeritus
If you must post your attempt at a solution in handwritten form, at least use a clean sheet of paper and present your work in some logical sequence so that others can follow it.

5. Mar 22, 2015

Staff: Mentor

@thegoosegirl42,
The image you posted was so bad that I deleted it. Please post the problem you want help on (not an image), together with your work.