This document provides instructions for finding the zeros of a quartic function using the function intersection feature on a TI-Nspire graphing calculator. It outlines the keystrokes to create a graph window, graph the quartic function, activate function intersection mode, hover over the graph and horizontal axis to highlight the intersection points representing the zeros, and view the coordinates of each zero by selecting the points. The process allows users to easily find all four zeros of a quartic function graphically on a TI-Nspire calculator.

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TI-Nspire Mini-Tutorials
Finding the Zeros of a Quartic Function Using Function
Intersection
Summary of Keystrokes
Create a graph window:
1
Graph the quartic function:
l3¢+11rXq-
(Reset Window as necessary to show all zeros.)
Activate function intersection:
7
(Use ¡ ¢¤` to hover over the graph of the quartic. Press · .
Repeat with the horizontal axis. The zeros should be highlighted as points.)
(Use ¡ ¢¤` to hover over the points that define the zeros. Press
· at each point to see the coordinates.)