Let H be the set of all points in the third quadrant in the plane V = R². That is, H = {(x, y) | x < 0, y < 0}. Is H a subspace of the vector space V? 1. Is H nonempty?

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter1: Vectors
Section1.3: Lines And Planes
Problem 47EQ
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Is H a subspace of vector space V?

Let H be the set of all points in the third quadrant in the plane V = R². That is, H = {(x, y) | x < 0, y < 0}. Is H a
subspace of the vector space V?
%D
1. Is H nonempty?
choose
2. Is H closed under addition? If it is, enter CLOSED. If it is not, enter two vectors in H whose sum is not in H, using a
comma separated list and syntax such as <1,2>, <3,4>.
3. Is H closed under scalar multiplication? If it is, enter CLOSED. If it is not, enter a scalar in R and a vector in H whose
product is not in H, using a comma separated list and syntax such as 2, <3,4>.
4. Is H a subspace of the vector space V? You should be able to justify your answer by writing a complete, coherent, and
detailed proof based on your answers to parts 1-3.
choose
Transcribed Image Text:Let H be the set of all points in the third quadrant in the plane V = R². That is, H = {(x, y) | x < 0, y < 0}. Is H a subspace of the vector space V? %D 1. Is H nonempty? choose 2. Is H closed under addition? If it is, enter CLOSED. If it is not, enter two vectors in H whose sum is not in H, using a comma separated list and syntax such as <1,2>, <3,4>. 3. Is H closed under scalar multiplication? If it is, enter CLOSED. If it is not, enter a scalar in R and a vector in H whose product is not in H, using a comma separated list and syntax such as 2, <3,4>. 4. Is H a subspace of the vector space V? You should be able to justify your answer by writing a complete, coherent, and detailed proof based on your answers to parts 1-3. choose
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