(i) Prove that {A € M3x3(F) | A is diagonal} is a subspace of Mnxn. (ii) Find a linearly independent set that generates this subspace.

Advanced Engineering Mathematics
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Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Problem. A matrix A is symmetric if A = A¹.
3
(i) Prove that {A € M3x3(F) | A is diagonal) is a subspace of Mnxn.
(ii) Find a linearly independent set that generates this subspace.
Problem 10. Prove that if {A₁, A2,..., Ak} is a linearly independent subset of Mnxm (F),
then {A₁, A₂,..., A} is also linearly independent.
OC
Transcribed Image Text:Problem. A matrix A is symmetric if A = A¹. 3 (i) Prove that {A € M3x3(F) | A is diagonal) is a subspace of Mnxn. (ii) Find a linearly independent set that generates this subspace. Problem 10. Prove that if {A₁, A2,..., Ak} is a linearly independent subset of Mnxm (F), then {A₁, A₂,..., A} is also linearly independent. OC
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