<p>Calculus made easy is a great program, I have it. However it is not 100 dollars, it is only like 50 I think if you can buy it as a student. There is a ‘buy as student’ link or something similar on cme.com but it’s kind of hard to find. I’d find it for you but I’m a little lazy.</p>
<p>It is great, however, not fully needed. There are many free alternative programs on Ticalc.com and don’t forget Calculus Tools. (from TI’s website) which are all free. While they won’t be able to do everything CME does, you’ll still do fine if you’re at least semi decent at math. And honestly, the step by step thing I actually don’t like that much. It will skip steps sometimes and overall isn’t that great. But CME/the ti89 DOES help on the multiple choice as some people will say it doesn’t. Not on EVERY question, but it definitely is a help.</p>
<p>Oh, and TI-89T is better than nSpire IMO.</p>