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Given a matrix M ? M mn , each function should first ensure thatthe matrix has the proper size (e.g., be
square if the definition involves a square matrix). Until CA4, wedo not implement proper error handling,
so for now, if the matrix is not of the proper size, the functionshould return FALSE. In this assignment,
we create functions that characterise matrix properties or types.These definitions can be found easily. For
reference, the location of some of the definitions in the Horn& Johnson book is provided. The following
functions should be made available:  
1. is_ real _matrix(M) is true if M ? M(R).
2. is _complex _matrix(M) is true if M ? M(C) and ?i,j such that=(m ij ) 6= 0.
3. is _diagonal_ matrix(M) is true if M ? M(C) is a diagonal matrix(H&J 0.9.1).
4. is_ lower _triangular_ matrix(M) is true if M ? M(C) is a lowertriangular matrix (H&J 0.9.3).
5. is _upper _triangular_ matrix(M) is true if M ? M(C) is an uppertriangular matrix (H&J 0.9.3).
6. is _triangular _matrix(M) is true if M ? M(C) is a triangularmatrix (H&J 0.9.3).
7. is _symmetric_ matrix(M) is true if M ? M(C) is a symmetricmatrix.
8. is -hermitian _matrix(M) is true if M ? M(C) is a Hermitianmatrix.
9. is_ skew _hermitian _matrix(M) is true if M ? M(C) is a skewHermitian matrix.
10. is_ normal _matrix(M) is true if M ? M(C) is a normalmatrix.
11. is _unitary_ matrix(M) is true if M ? M(C) is a unitarymatrix.
12. is_ orthogonal_ matrix(M) is true if M ? M(C) is an orthogonalmatrix.
13. is_ permutation _matrix(M) is true if M ? M(C) is a permutationmatrix (H&J 0.9.5).
14. is _reversal_ matrix(M) is true if M ? M(C) is a reversalmatrix (H&J 0.9.5).
15. is _circulant _matrix(M) is true if M ? M(C) is a circulantmatrix (H&J 0.9.6).
16. is _Toeplitz_ matrix(M) is true if M ? M(C) is a Toeplitzmatrix (H&J 0.9.7).
17. is _Hankel _matrix(M) is true if M ? M(C) is a Hankel matrix(H&J 0.9.8).
18. is _lower_ Hessenberg matrix(M) is true if M ? M(C) is a lowerHessenberg matrix (H&J 0.9.9).
19. is_ upper_Hessenberg matrix(M) is true if M ? M(C) is an upperHessenberg matrix (H&J 0.9.9).
20. is _tridiagonal_ matrix(M) is true if M ? M(C) is a tridiagonalmatrix (H&J 0.9.10).
21. is _Jacobi _matrix(M) is true if M ? M(C) is a Jacobi matrix(H&J 0.9.10).
22. is_ persymmetric_ matrix(M) is true if M ? M(C) is apersymmetric matrix (H&J 0.9.10).