1. Let x E C" and y E C™, with y # 0. Consider the m x n matrix defined by A = yx*. (a) Show that rank A = 1. (b) Show that ||A||2 = ||x||2||y||2- (c) Show that ||A||F = ||x||2||y||2 (which is the same as ||x||F||y||F).

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter9: Systems Of Equations And Inequalities
Section9.8: Determinants
Problem 33E
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SOLVE NUMBER 1

1. Let x E C and y E Cm, with y + 0. Consider the m x n matrix defined by A = yx*.
(a) Show that rank A = 1.
(b) Show that ||A||2 = ||x||2||y||2-
(c) Show that ||A||F = ||x||2||y||2 (which is the same as ||c||F||y||F).
Transcribed Image Text:1. Let x E C and y E Cm, with y + 0. Consider the m x n matrix defined by A = yx*. (a) Show that rank A = 1. (b) Show that ||A||2 = ||x||2||y||2- (c) Show that ||A||F = ||x||2||y||2 (which is the same as ||c||F||y||F).
Expert Solution
Step 1

Given that

xn and yn, with y0.

Consider m×n matrix defined by  A=yx*.

To prove (a), (b) and (c):

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