How to Access Symbols on the TI-89 Graphing Calculator

TI-83 Plus Graphing Calculator For Dummies

Of course your calculator needs a not-equal-to sign, but the TI-89 graphing calculator also offers the @, an exclamation mark, and a sigma. The following list shows you how to produce these symbols and more:

About This Article

About the book author:

C.C. Edwards is an instructor at Coastal Carolina University and a former editor of Texas Instruments' Eightysomething, a newsletter for parents and educators.