This video appears on the page: Matrices

The Determinant

In this video we'll cover how to calculate the determinant of 2x2 and 3x3 matrices, the latter requiring you to break the 3x3 into a bunch of 2x2's. If your teacher lets you use calculators for 3x3's, you're in luck; otherwise you're going to get tired of me telling you not to forget the minus sign in front of the second term!