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How to find the determinant of a 3 by 3 matrix (3 ways) linear algebra tutorial

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Learn how to find the determinant of a 3 by 3 matrix for your linear algebra class!

0:00 cofactor expansion
3:00 the shortcut! only for 3 by 3 matrices
5:15 The proof for the shortcut
9:30 use the properties of the determinant

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posted by dorkylilmzprzdb


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