From dbc555e82977b38c7dc7598e7f5b80786a69a559 Mon Sep 17 00:00:00 2001
From: ben-jaynes <1btjaynes@gmail.com>
Date: Sat, 3 Oct 2026 17:00:11 -0700
Subject: [PATCH] vault backup: 2026-10-03 17:00:11

---
 .../AU 26/MATH 208 (Matrix Algebra)/Chapter 1.2 Notes.md  | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/College/AU 26/MATH 208 (Matrix Algebra)/Chapter 1.2 Notes.md b/College/AU 26/MATH 208 (Matrix Algebra)/Chapter 1.2 Notes.md
index 188a53a..1c92df9 100644
--- a/College/AU 26/MATH 208 (Matrix Algebra)/Chapter 1.2 Notes.md	
+++ b/College/AU 26/MATH 208 (Matrix Algebra)/Chapter 1.2 Notes.md	
@@ -2,4 +2,10 @@
 - - -
 - Not all systems of linear equations will be in echelon form and easily solvable
 - There are three **elementary operations** that can be used to create a new system that is equivalent to the old one
-	- $$ 
\ No newline at end of file
+	- Interchange the position of two equations
+	- Multiply an equation by a nonzero constant
+	- Add a multiple of one equation to another
+	- $\sim$ is used to indicate the transformation between equivalent linear systems
+- matricies can be used to simplify when working with systems of linear equations
+	- matricies with all constant terms of a linear system of equations are called a **augmented matrix**
+	- $$\begin{align*} a_{11}x_{1} + a_{12}x_{2} + a_{13}  \end{align*}$$
\ No newline at end of file