In linear algebra, a matrix is invertible if it has an inverse matrix. An inverse matrix is a square matrix that, when multiplied by the original matrix, results in the identity matrix. The identity matrix is a square matrix with 1s on the diagonal and 0s everywhere else.
There are several ways to check if a matrix is invertible. One way is to use the determinant of the matrix. The determinant of a matrix is a single number that can be calculated using a variety of methods. If the determinant of a matrix is 0, then the matrix is not invertible.
