(Be sure to use differential notation properly. Show all work for full credit)

1. Find and simplify the derivative.

a)

b)

2) Find the equation of the line tangent to at . Give exact coefficients and approximate coefficients to the nearest thousandth.

3) Find theaveragerate of change of on the interval .

4) Find theinstantaneousrate of change of w with respect to z if .

The answers I've got for these are:

1) a)

b)

2)

3)

4)

What I would like for someone to do is:

1) Tell me if my answers are correct

2) Do the problems so that I can see how you did them because I got the answers, but it wasn't pretty.

3) tell me if my answers are simplified they way they should be.

Thanks Dudes. (and dudesses)