A square matrix A is idempotent if A² = A. t V be the vector space of all 2 x 2 matrices with real entries. Let H be the set of all 2 × 2 empotent matrices with real entries. Is H a subspace of the vector space V? 1. Is H nonempty? choose 2. Is H closed under addition? If it is, enter CLOSED. If it is not, enter two matrices in H whose sum is not in H, using a comma separated list and syntax such as [1 2] 5 6 [[1,2], [3,4]], [[5,6],[7,8]] for the answer (Hint: to show that H is not closed under addition, it is sufficient to find two idempotent matrices A and B such that (A + B)² + (A + B).) 3. Is H closed under scalar multiplication? If it is, enter CLOSED. If it is not, enter a scalar in R and a matrix in H whose product is not in H, using a comma separated list and syntax such [3 4 as 2, [[3,4],[5,6]] for the answer 2, (Hint: to show that H is not closed 5 6 under scalar multiplication, it is sufficient to find a real number and an idempotent matrix A such that (rA)² + (rA).) 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

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
icon
Related questions
Question
A square matrix A is idempotent if A² = A.
Let V be the vector space of all 2 x 2 matrices with real entries. Let H be the set of all 2 × 2
idempotent matrices with real entries. Is H a subspace of the vector space V?
1. Is H nonempty?
choose
2. Is H closed under addition? If it is, enter CLOSED. If it is not, enter two matrices in H whose
sum is not in H, using a comma separated list and syntax such as
1 2
[[1,2], [3,4]], [[5,6], [7,8]] for the answer
5 6
34 7 8
(Hint: to show
that H is not closed under addition, it is sufficient to find two idempotent matrices A and B
such that (A + B)² + (A + B).)
3. Is H closed under scalar multiplication? If it is, enter CLOSED. If it is not, enter a scalar in R
and a matrix in H whose product is not in H, using a comma separated list and syntax such
[34
as 2, [[3,4],[5,6]] for the answer 2,
(Hint: to show that H is not closed
5 6
under scalar multiplication, it is sufficient to find a real number and an idempotent matrix A
such that (rA)² + (rA).)
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:A square matrix A is idempotent if A² = A. Let V be the vector space of all 2 x 2 matrices with real entries. Let H be the set of all 2 × 2 idempotent matrices with real entries. Is H a subspace of the vector space V? 1. Is H nonempty? choose 2. Is H closed under addition? If it is, enter CLOSED. If it is not, enter two matrices in H whose sum is not in H, using a comma separated list and syntax such as 1 2 [[1,2], [3,4]], [[5,6], [7,8]] for the answer 5 6 34 7 8 (Hint: to show that H is not closed under addition, it is sufficient to find two idempotent matrices A and B such that (A + B)² + (A + B).) 3. Is H closed under scalar multiplication? If it is, enter CLOSED. If it is not, enter a scalar in R and a matrix in H whose product is not in H, using a comma separated list and syntax such [34 as 2, [[3,4],[5,6]] for the answer 2, (Hint: to show that H is not closed 5 6 under scalar multiplication, it is sufficient to find a real number and an idempotent matrix A such that (rA)² + (rA).) 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
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Similar questions
Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,
Basic Technical Mathematics
Basic Technical Mathematics
Advanced Math
ISBN:
9780134437705
Author:
Washington
Publisher:
PEARSON
Topology
Topology
Advanced Math
ISBN:
9780134689517
Author:
Munkres, James R.
Publisher:
Pearson,