Cross Product on TI 84 | NO Program ! Five Examples
Channel: probaye0
Date: 2021-05-03

Have a low-end graphing calculator but need to find the cross product (vector product) on exams?

This is an original workaround that works on exams. It is based on the determinant of a 3 x 3 matrix. Very simple method but the version in the video is guaranteed to work when all components are integers from -15 to 15. However, it can be easily modified to allow for components from -49 to 49 by using 1E8, 1E4, and 1 as the first row, instead of 1E6, 1E3 and 1.

Method applies for
TI 83 and up
Casio fx-9750GII and up

0:00 Intro / Setup
0:56 Example 1: Getting Started
1:43 Example 2: Systematic Approach
2:43 Example 3: Negative Answer
3:45 Example 4: Small Answer
4:30 Example 5: It Just Works!