In Exercises 1-2, classify the matrix as upper triangular, lower tri- angular, or diagonal, and decide by inspection whether the matrix is invertible. Recall that a diagonal matrix is both upper and lower triangular, so there may be more than one answer in some parts. 1 1. - [32 3] b. 0 3 -2 7 d. 0 0 0 a. C. -1 0 0 0 2 0 1 0 0 4 0 3 8

In Exercises 1-2, classify the matrix as upper triangular, lower tri- angular, or diagonal, and decide by inspection whether the matrix is invertible. Recall that a diagonal matrix is both upper and lower triangular, so there may be more than one answer in some parts. 1 1. - [32 3] b. 0 3 -2 7 d. 0 0 0 a. C. -1 0 0 0 2 0 1 0 0 4 0 3 8

Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter3: Matrices

Section: Chapter Questions

Problem 17RQ

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