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
icon
Related questions
Question
Let A be n x n matrix that has zeros on the main diagonal and ones everywhere else. Example of a 4 × 4 matrix
of this type is given below
0 1
1 0 1
0 1
1 1
1
1
1
1
1
1 0
(3a,
) Compute det (A) and A-1 for n =
2, 3, 4.
(3b,
) Note that in the cases n = 2,3, 4 the matrix A-1 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-l in the general
case (or arbitrary n) and verify that your guess is correct by checking that AA-1 = I.
%3D
Transcribed Image Text:Let A be n x n matrix that has zeros on the main diagonal and ones everywhere else. Example of a 4 × 4 matrix of this type is given below 0 1 1 0 1 0 1 1 1 1 1 1 1 1 1 0 (3a, ) Compute det (A) and A-1 for n = 2, 3, 4. (3b, ) Note that in the cases n = 2,3, 4 the matrix A-1 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-l in the general case (or arbitrary n) and verify that your guess is correct by checking that AA-1 = I. %3D
Expert Solution
steps

Step by step

Solved in 3 steps

Blurred answer
Recommended textbooks for you
Linear Algebra: A Modern Introduction
Linear Algebra: A Modern Introduction
Algebra
ISBN:
9781285463247
Author:
David Poole
Publisher:
Cengage Learning
Elementary Linear Algebra (MindTap Course List)
Elementary Linear Algebra (MindTap Course List)
Algebra
ISBN:
9781305658004
Author:
Ron Larson
Publisher:
Cengage Learning
Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:
9781133382119
Author:
Swokowski
Publisher:
Cengage