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Compute the determinants in Exercises $1-8$ using a cofactor expansion across the first row. In Exercises $1-4,$ also compute the determinant by a cofactor expansion down the second column.$$\left|\begin{array}{rrr}{2} & {-2} & {3} \\ {3} & {1} & {2} \\ {1} & {3} & {-1}\end{array}\right|$$

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Algebra

Chapter 3

Determinants

Section 1

Introduction to Determinants

Introduction to Matrices

Campbell University

McMaster University

Baylor University

University of Michigan - Ann Arbor

Lectures

01:32

In mathematics, the absolu…

01:11

01:28

Compute the determinants i…

01:41

00:44

03:28

02:14

00:50

00:53

Combine the methods of row…

05:55

Use elementary row operati…

02:43

Evaluate the given determi…

everyone today they are going to start problem number third here. We had to find the determinant off the Given three by three matrix that is two minus two three, 31 to and one three minus smart. So expand along. Second column to like minus off minus two. Indu minus three. Minus two plus one into minus two minus three. Minus three in new for minus nine. So it comes to be to win. Do minus five plus morning. Do minus five minus three into minus five. Value is zero.

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