For this problem, you will experience a computer program called MATLAB. (MATLAB

Question

For this problem, you will experience a computer program called MATLAB.

(MATLAB Manual: For MATLAB, a rich manual is built-in and available during its run time.
Use the “help” command; for example, try a command of the form “help determinant”.)

Explanation / Answer

I will use ">>" to symbolize the MATLAB prompt. Don't type ">>". For entering the matrix A, put square brackets and type the entries of the matrix inside the brackets from left to right starting from row 1, then left to right in row 2, et cetera. Put a semicolon between different rows to tell MATLAB that it's a new row. So, for your matrix A, write >> A = [1 -3 1 -2 ; 2 -5 1 -2 ; 0 -4 5 1 ; -3 10 -6 9] The semicolons (;) tell MATLAB to go to a new row in the matrix you're entering. After you define A, finding the determinant is simple. Write >> det(A) It will tell you the answer. For the inverse, type >> A^-1 This will give you the inverse.

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