FUNCTIONS Evaluating A Function (Page 1 of 14)

There are many different ways to evaluate a function on the TI-83/84. Let's use the function f(x) = 3x^2-5x+2 and evaluate this function at x = 4.5. We can do this on the Home screen by storing the value of 4.5 into x and then entering the expression for f. This can be done efficiently with a single command line if we use the colon key.

CLEAR key.

4 key. Period key. 5 key. STO key. X,T,theta,n key. ALPHA Colon key.

3 key. X,T,theta,n key. x-squared key. Minus key. 5 key. X,T,theta,n key. Plus key. 2 key. ENTER key.

 Calculator screen image.
Copyright © 2010 Turner Educational Publishing
Go back to the previous page. Go to the next page. Go to the Table of Contents. Go to the Index page. Go to the Quiz page. Exit to the Home page.