Programming TI Graphic Calculators to Solve Quadratic Equations
Linear Regression
For additional help using your calculator:
http://www.prenhall.com/divisions/esm/app/calc_v2/
http://math.about.com/cs/calculatorhelp/
http://education.ti.com/us/student/tutorials/tutorials.html
http://www.prenhall.com/divisions/esm/app/calculator/medialib/Technology/Documents/TI-89/desc_pages/cubic-reg.html