HW for 5/1

Posted by Allen Olsen on 5/1/2019

Objective: Apply row operations to determinants to evaluate them.

Today we learned that row operations can be applied to determinants, and have the following effects:

1. An operation like 3R_1 + R_2 → R_2 does not change the value of the determinant.

2. If you multiply a row by a number n: n·R_1 → R_1, this multiplies the value of the determinant by n, too.

3. If you swap any two rows: R_1 ↔ R_2, this multiplies the determinant by -1.

We will continue this discussion in the next class.  Meanwhile, this is today's

HW: Sect. 7.3, p 546:

55 - 66.