Matrix 2

Matrix 2

Determinant and Inverse of 2x2 Matrix

Learning Objectives

• Finding the determinant of 2x2 matrices

• Inverse of 2x2 matrices

Determinant of Matrices

2x2 and 3x3 Matrices

Multiple Choice

Find the determinant of the matrix

• -9

• -11

• 21

• 9

Multiple Choice

Calculate the determinant

• 0
• none
• -32
• -8

Multiple Choice

Evaluate the determinant of the matrix.

• -21
• 0
• 9
• 12

Multiple Choice

Evaluate the determinant of the matrix.

• -21
• 0
• 9
• 12

Inverse of Matrices

2x2 Matrix

What happen if det(A) = 0?

Matrix A will have no inverse. We call matrix A as a Singular Matrix

Exercise

Algebra 2, G.10

Precalculus, L.12