Let A be n x n matrix that has zeros on the main diagonal and ones everywhere else. Example of a 4 x 4 matrix of this type is given below 0 1 1 1 1 0 1 1 0 1 1 1 0. 1 1 1 (3a, ) Compute det (A) and A-1 for n = 2, 3, 4. ) Note that in the cases n = 2,3, 4 the matrix A- has a special structure (all the elements on the diagonal are the same and all the off-diagonal elements are also the same). Guess a formula for A- in the general (3b, case (or arbitrary n) and verify that your guess is correct by checking that AA-1 = I.
Let A be n x n matrix that has zeros on the main diagonal and ones everywhere else. Example of a 4 x 4 matrix of this type is given below 0 1 1 1 1 0 1 1 0 1 1 1 0. 1 1 1 (3a, ) Compute det (A) and A-1 for n = 2, 3, 4. ) Note that in the cases n = 2,3, 4 the matrix A- has a special structure (all the elements on the diagonal are the same and all the off-diagonal elements are also the same). Guess a formula for A- in the general (3b, case (or arbitrary n) and verify that your guess is correct by checking that AA-1 = I.
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter5: Orthogonality
Section5.4: Orthogonal Diagonalization Of Symmetric Matrices
Problem 27EQ
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