When A is invertible, MATLAB finds A^-1 by factoring A = LU (where I may be permuted lower triangular), inverting L and U, and then computing U^-¹L^-¹. Use this method to
compute the inverse of A in Exercise 2.

Data from in Exercise 2

Solve the equation Ax = b by using the LU factorization given for A. Also solve Ax = b by ordinary row reduction.

Transcribed Image Text:

A = A = 4 -4 8 1 -1 2 3-5 7 6-8 -5 0 0 10 0 1 b= 2 -4 6 4 3-5 0-2 2 00 2