Matrices and Determinants

What students will learn

• Define a matrix and identify the order of given matrices.
• Perform basic arithmetic operations of addition, subtraction, and scalar multiplication on matrices.
• Calculate the determinant of 2×2 and 3×3 square matrices.
• Determine the inverse of a 2×2 matrix.
• Apply matrix methods to solve systems of linear simultaneous equations.

Sample quiz questions

1. What is the order of the matrix [1 2 3; 4 5 6]?

   • A. 3 × 2
   • B. 2 × 3
   • C. 6 × 1
   • D. 1 × 6

2. If A = [2 -1; 3 4] and B = [1 5; -2 0], what is A + B?

   • A. [3 4; 1 4]
   • B. [3 6; 1 4]
   • C. [3 4; 5 4]
   • D. [2 -5; -6 0]

Answers and explanations come with the full quiz when you sign up.