blog.jr.com - Latest Comments in The TI-89 is the Math Student’s Best Friendhttp://jrblog.disqus.com/J&R's Community BlogenThu, 14 Aug 2008 14:37:19 -0000Re: The TI-89 is the Math Student’s Best Friendhttp://blog.jr.com/the-ti-89-is-the-math-students-best-friend/#comment-2941439The TI-89 is an excellent calculator. My pre-calc - calc 3 teachers banned us from using them in class because they can do differentian and anidifferentian for you. Excellent tool for Math, Science& engineering majors.IanThu, 14 Aug 2008 14:37:19 -0000