[Calculus] Limit/Derivative/Optimization; Check my Work Plz

Mar 2014
8
0
United States
Hello, I've been assigned a few calculus problems and I've completed 2 out of the 4 of them so far. I was wondering if anyone would be willing to check the first two, and if they have time, also offer me some insight on how to solve the second two?

Here is a link to my work: https://www.dropbox.com/s/jn0mqvt1gw4tt ... s.pdf?dl=0

And here is an imgur gallery of my work if you'd prefer that to a PDF: http://imgur.com/a/AKlOF
 
Last edited:

chiro

MHF Helper
Sep 2012
6,608
1,263
Australia
Hey zimmert.

First part of question one and question two looks good but I don't know whether your teacher requires you to expand everything out explicitly.

The second part may have an error where you should have (x-2) instead of (x+2) if a = 2 (instead of -2).