UNIT 6:Matrices and Determinant of Order 3

6.1. Square matrices of order three

6.1.1. Definitions

6.1.3. Operations on matrices

Activity 6.2

Multiplying matrices

Activity 6.4

Solution

Notice

Properties of a determinant

Activity 6.7

6.3. Application

6.3.1. System of 3 linear equations

Activity 6.9

Let use another useful method.

Solution: 

Let C and M , B, represent the number of serving of chicken, baked 

potatoes, and milk respectively.