(b) Without using determinants, find all real numbers k such that the matrix B = 1 1 k 0 1 2 1 is not invertible, i.e., is singular.

Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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(b) Without using determinants, find all real numbers k such that the
matrix
B =
1 1
k 0 1
2 1
is not invertible, i.e., is singular.
Transcribed Image Text:(b) Without using determinants, find all real numbers k such that the matrix B = 1 1 k 0 1 2 1 is not invertible, i.e., is singular.
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