Use Gaussian elimination to find the determinant of the matrices A in Exercises 1 through 10.
Therefore, the determinant of given matrix is given by,
Gaussian elimination method is used to solve a system of linear equations.
Gaussian elimination provides a relatively efficient way of constructing the inverse to a matrix.
Interchanging two rows. Multiplying a row by a constant (any constant which is not zero).
First, we multiply the first row by -1 and add it to the second and third row. Then, we multiply the first row by -2 and add it to the 4th row.
We had zero row swaps, so
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