Find where to buy the TI-84 Plus CE graphing calculator in a variety of bold, fun colors.
Download free 90-day trial versions of the most popular TI software and handheld emulators.
Bring a new dimension of learning to your classroom with activities that put math in motion.
Explore teaching strategies to help students succeed on the SAT® and ACT® math tests using TI technology.
Drive deeper, more relevant understanding of science in middle grades and high school.
Texas Instruments
9-12
45 Minutes
TI-Nspire™TI-Nspire™ CAS
1.7
Students will use learn about inverse matrices in the context of encoding/decoding secret messages and then use inverse matrices to solve systems of equations.
On page 1.4, students are given the definition of the inverse of a 2 × 2 matrix, and they are asked to find the inverse of the encoding matrix on page 1.5.