Find local maxima and minima on the TI-89
How to find local maxima and minima on the TI-89 Check out this instructional math video that demonstrates how to find the local maxima and minima for a function using the TI-89 graphing calculator. Learn how to do so by entering the function on the y equals screen. This step-by-step guide uses arrow keys to lead you through the simple process of using your TI-89 graphing calculator.