04-27-2012, 08:35 AM
Shorter uses Calculus&Mathematica, the same program as UIUC's NetMath. I took one of the calculus courses through NetMath and, while it wasn't especially hard, it was a lot of work. It was also unconventional in its teaching approach, which meant it was hard to turn to outside sources like Kahn Academy when I needed extra help. If you just need the credit, there are probably easier options than Shorter.