13 Invertible Matrices

This section will focus on matrix inverses, which relates to 12 Nonsingular Linear Systems:

• $A$ is nonsingular (linearly independent columns)
• nonsingular = invertible

Notes

• 13.1 Inverse of a Square Matrix
• 13.2 Inverses of Elementary Matrices
• 13.3 Cramer's Rule for Inverse of a 2x2 System
• 13.4 Properties of Matrix Inverses