(a) Which rules are broken if we keep only the positive numbers x > 0 in R 1 ? Every c must be allowed. The half-line is not a subspace.(b) The positive numbers with x + y and cx redefined to equal the usual xy and xc do satisfy the eight rules. Test rule 7 when c = 3, x = 2, y = 1. (Then x + y = 2 and cx= 8.) Which number acts as the "zero vector"?
(a) Which rules are broken if we keep only the positive numbers x > 0 in R 1 ? Every c must be allowed. The half-line is not a subspace.(b) The positive numbers with x + y and cx redefined to equal the usual xy and xc do satisfy the eight rules. Test rule 7 when c = 3, x = 2, y = 1. (Then x + y = 2 and cx= 8.) Which number acts as the "zero vector"?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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(a) Which rules are broken if we keep only the positive numbers x > 0 in R 1 ? Every c must be allowed. The half-line is not a subspace.
(b) The positive numbers with x + y and cx redefined to equal the usual xy and xc do satisfy the eight rules. Test rule 7 when c = 3, x = 2, y = 1. (Then x + y = 2 and cx= 8.) Which number acts as the "zero vector"?
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