(a) The set of all 2 × 2 symmetric matrices is a subspace of R²×². Find a basis for this subspace, and find the coordinates of -1 in that basis.
(a) The set of all 2 × 2 symmetric matrices is a subspace of R²×². Find a basis for this subspace, and find the coordinates of -1 in that basis.
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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
Transcribed Image Text:2×2
(a) The set of all 2 × 2 symmetric matrices is a subspace of R²x2. Find a basis for this
subspace, and find the coordinates of
-1
in that basis.
(b) The set of all 2 x 2 upper-triangular matrices is a subspace of R-*2. Find a basis for this
subspace, and find the coordinates of
-3
-2
1
in that basis.
2×2
(c) Is the set of 2 × 2 matrices that are symmetric and upper-triangular a subspace of IR²*²?
Why or why not?
2×2
(d) Is the set of 2 × 2 matrices that are symmetric or upper-triangular a subspace of IR
'? Why
or why not?
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