Linear Algebra 3.1 The Determinant of a Matrix

The focus of this video is on understanding and computing the determinant of square matrices.

Video Chapters:
0:00 Introduction
0:07 What is a Determinant?
1:43 The Determinant of a 2×2 Matrix Using Diagonals
2:52 The Determinant of a 3×3 Matrix Using Diagonals
5:31 Minors and Cofactors
8:36 The Determinant of a Square Matrix Using Cofactor Expansion
11:53 Practice Using Cofactor Expansion
15:12 Checking Determinants in Desmos
15:34 Practice (On Your Own) Using Cofactor Expansion
17:22 The Determinant of a Triangular Matrix
18:08 Up Next

Textbook: Elementary Linear Algebra 8e, Ron Larson

Slide Decks: https://bellevueuniversity-my.sharepoint.com/:f:/g/personal/kbrehm_bellevue_edu/IgDVnTt2BohsRLsMfseN5FijAXYDd49YlIkHeq5cfmCxG2g?e=ZwTt3c

Playlist: https://youtube.com/playlist?list=PLl-gb0E4MII1RjTV2GegmXFTJwTrek8OI&si=g3Xc3yHB5GkmxMF4