please solve all parts using Matlab

1) 2) 3) 4) 5) Write a function my trace to compute the trace of a matrix Write a function my sum to sum all the elements of a matrix Write a function sum rows to sum all the rows of a matrix, note this should return back a row vector Write a function to sum cols sum the columns ofa matrix, note this should return back a column vector Combine the functions in 3 and 4 into 1 function sum row or cols which takes an additional parameter that let's you choose to sum either columns or rows. 1 should sum over columns, 2 should sum over rows. i.e. you should call sum row or cols (A, 1) or sum row or _ cols (A, 2)