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).
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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Equations and Inequations
Equations and inequalities describe the relationship between two mathematical expressions.
Linear Functions
A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.
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SOLVE NUMBER 1
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Step 1
Given that
and , with .
Consider matrix defined by .
To prove (a), (b) and (c):
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