(a) Suppose addition in R² adds an extra 1 to each component, so that (3,1)+(5,0) = (9,2) in- stead of (8,1). With scalar multiplication unchanged, which of the 8 rules of addition and scalar multiplication for a vector space are broken? (b) Show that the set of all positive real numbers, with x+y and cx redefined to equal the usual xy and xc, is a vector space, or indicate why it is not. What is the "zero vector"?

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Problem 16.
(a) Suppose addition in R2 adds an extra 1 to each component, so that (3, 1) + (5,0) = (9,2) in-
stead of (8,1). With scalar multiplication unchanged, which of the 8 rules of addition and scalar
multiplication for a vector space are broken?
(b) Show that the set of all positive real numbers, with x+y and cx redefined to equal the usual xy
and xº, is a vector space, or indicate why it is not. What is the "zero vector"?
Transcribed Image Text:Problem 16. (a) Suppose addition in R2 adds an extra 1 to each component, so that (3, 1) + (5,0) = (9,2) in- stead of (8,1). With scalar multiplication unchanged, which of the 8 rules of addition and scalar multiplication for a vector space are broken? (b) Show that the set of all positive real numbers, with x+y and cx redefined to equal the usual xy and xº, is a vector space, or indicate why it is not. What is the "zero vector"?
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