As you may have noticed, some matrix operations are very tedious by hand. In particular, matrix multiplication and matrix inverses are much easier to do using a graphing calculator or WolframAlpha. In the Weekly Learning Plan, I put several handouts to help you use your calculator to do these problems.

- Handout: Matrix Multiplication on a TI Graphing Calculator
- Handout: Inverse Matrix on a TI Graphing Calculator
- Handout: Solve a System with Inverses on a TI Graphing Calculator

However, some of you do not have a graphing calculator…you’ll need to use WolframAlpha to carry out these operations.