Question 4 use matlab

Write a MATLAB function that takes an array and sorts it with respect to descending ordering (from largest to smallest) using INSERTION SORT Consider the matrix A and the vector b given below. A = [2 4 -2 4 1 5 5 11 -1 -3 -2 -4 2 6 6 8], b = [5 9 4 2] a) Apply forward elimination with partial pivoting to the pair [A|b] b) Apply backward substitution to the result you found in part b) to find the solution of Ax = b c) Compute determinant of A using forward elimination with partial pivoting d) Find inverse of A by first applying forward elimination with partial pivoting then applying backward elimination Do the following: a) Write a MATLAB function that takes a matrix A, vector b and applies forward elimination with partial pivoting to the pair [A|b]. If the matrix is singular, it should report this with an error message. b) Write a MATLAB function that performs back substitution c) Write a MALTAB function that find solution of Ax = b by calling the functions you wrote in parts a) and b). d) Use function to solve the problem given in question 1. Did you get the same answer? Also try to use the function to solve the equations defined by following pair. A = [6 4 -2 2 3 5 5 10 -3 -3 -2 -5 6 6 6 12], b = [5 0 4 9] Write a MATLAB function that computes determinant of square matrix applying forward elimination with partial pivoting. If the matrix is singular, it should return zero since determinant of a singular matrix is zero. Use your function to find the determinants of the matrices given in question 1 and 2