matlab homework help needed...unable to find any help on Mathworks of how to build code to prove orthogonal. I know how to define orthogonal but need to find how to build matlab code.

2.21. An orthogonal matrix A is defined as a square matrix such that the product of the matrix and its transpose equals the unit matrix or AAT=1 Use MATLAB to verify that the following matrices are orthogonal: 2 BE / COS(1/3) sin(1/3) IS-SS -IST- c=[ _(T/3) cos(7/3) ] 2.22. Write MATLAB scripts to implement both the Gauss-Seidel and the Jacobi method and use them to solve, with an accuracy of 0.000005, the equation system Ax=b where the elements of A are dii = -4 dij = 2 if li- l = 1 ai; = 0 ifli - il 22 where i, j = 1, 2, ..., 10 and b = [2 3 4 ... 11) Use initial values x; = 0, where i = 1, 2, ..., 10. (You might also like to experiment with other initial values.) Check your results by solving the system using the MATLAB operator