2 x 2 invertible matrix - Matrices

2 x 2 invertible matrix

In this section, we will learn about what an invertible matrix is. An invertible matrix is a square matrix that has an inverse. We say that a square matrix is invertible if and only if the determinant is not equal to zero. In other words, a 2 x 2 matrix is only invertible if the determinant of the matrix is not 0. If the determinant is 0, then the matrix is not invertible and has no inverse.

Lessons

Notes:
An invertible matrix is a square matrix that has an inverse.
We say that a square matrix (or 2 x 2) is invertible if and only if the determinant is not equal to zero.
In other words, if XX is a square matrix and det(X)0(X)\neq0, then XX is invertible.
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2 x 2 invertible matrix

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