Lesson: Finding the Inverse of a Matrix Using the Adjoint Matrix Method
In this lesson, we will learn how to determine whether a matrix has an inverse and then find it using the adjoint matrix method.
Sample Question Videos
Worksheet: 7 Questions • 1 Video
Which of the below matrices does NOT have an inverse?
Consider the matrix Determine whether the matrix has an inverse by finding whether the determinant is nonzero. If the determinant is nonzero, find the inverse using the formula for the inverse which involves the cofactor matrix.
Using the formula for the inverse in terms of the cofactor matrix, find the inverse of the matrix