I've been stressing over these problems all week and my math professor has been always "busy" after school (I know... unreliable). So could anyone please help me with a few of these calculus problems and please explain how you got to the answer? I'm not going to type all of my homework because I also want to work on the rest of the problems so I am sure I am getting it.

Here are the directions and a couple problems:

**Use the derivative formulas and the chain rule: if To find the derivative of each of the functions below.**
10)

11)

12)

Could someone out there please help! We have a quiz on this on Friday and I need all the help I could get.