I had to give back a loaned TI-83+ in June, and I purchased a TI-89 to replace it. I've figured out how to do most things, except these two which are really annoying me:<BR><BR>1. Cubic and higher ...

The TI-89 is a graphing calculator used in advanced mathematics classes and approved for use on examinations like the Scholastic Aptitude Test and various Advanced Placement tests. While its large ...

All products featured on WIRED are independently selected by our editors. However, when you buy something through our retail links, we may earn an affiliate commission. Most powerful TI model allowed ...