(d) Let C be an nXn matrix. Explain why if the echelon form of C has at least one zero row, then C is not invertible.

Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter2: Matrices
Section2.1: Operations With Matrices
Problem 87E
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Question
D
1 0
k 0
Consider the two matrices A =
and B =0 2 0
Answer the
1 5k
11-1
of
following questions using techniques and results studied in the course so far.
Show all your work in details.
(a) Find the values of k such that that A is invertible without finding it.
Justify your answer.
(b) Find B
if exists.
(c) If Bis the standard matrix of a linear transformation T, Find the image
of a general vector x under the inverse linear transformation T.
(d) Let C be an nXn matrix. Explain why if the echelon form of C has at
least one zero row, then C is not invertible.
Transcribed Image Text:1 0 k 0 Consider the two matrices A = and B =0 2 0 Answer the 1 5k 11-1 of following questions using techniques and results studied in the course so far. Show all your work in details. (a) Find the values of k such that that A is invertible without finding it. Justify your answer. (b) Find B if exists. (c) If Bis the standard matrix of a linear transformation T, Find the image of a general vector x under the inverse linear transformation T. (d) Let C be an nXn matrix. Explain why if the echelon form of C has at least one zero row, then C is not invertible.
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