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The determinant of a matrix is calculated using MATLAB's det function. The determinant of matrix A is given by det(A).
Create a script file using the following code-
a = [ 1 2 3; 2 3 4; 1 2 5] det(a)
When running the file, it displays the following result-
a = 1 2 3 2 3 4 1 2 5 ans = -2