Which of the following sets are subspaces of Rª ? I. The solution set of the system Ar = 0, for a 4 × 3 matrix A

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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sets are subspaces

Which of the following sets are subspaces of R' ?
I. The solution set of the system Ax = 0, for a 4 × 3
matrix A
II. The set of all vectors (r1, r2, x3, £4) in R' such
that |æ1|+ |x2| + |x3| + |x4| = 7
III. The set of all vectors (x1, x2, x3, x4) in R' such
that r1 = 5x2 – x3+3x4
IV. The set of all vectors (r1,x2, X3, X4) in R' such
that r2 = x4 = 0
Transcribed Image Text:Which of the following sets are subspaces of R' ? I. The solution set of the system Ax = 0, for a 4 × 3 matrix A II. The set of all vectors (r1, r2, x3, £4) in R' such that |æ1|+ |x2| + |x3| + |x4| = 7 III. The set of all vectors (x1, x2, x3, x4) in R' such that r1 = 5x2 – x3+3x4 IV. The set of all vectors (r1,x2, X3, X4) in R' such that r2 = x4 = 0
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