Learning objectives

• Compute determinants of square matrices using row operations
• Relate determinants to invertibility of matrices

Before class

• Read Lay sections 3.1, 3.2
• Consult notes to the textbook (if you wish)
• Ponder Lay problems 3.1: 3, 9, 10, 37; 3.2:1-4, 5, 6, 15-20, 24.
• Post to Piazza
• Write solutions to problems 1.8: 20, 22, 30; 1.9: 8, 24; 2.1: 16, 18; 2.2: 8, 22; 2.3: 18, 20 to turn in at the beginning of class

In class

• Properties of determinants