B. Fun Subspaces Consider the following 3 x 4 matrix A and its Reduced Row Echelon form, denoted U. [1 2 0 1 A = 0 1 20 1 2 0 1 - [10 -4 1 U = 0 1 2 [0000] 0 1. Find a basis and dimension for the four fundamental subspaces of A and U. 2. Which of the four fundamental spaces of A have the same dimension as those of U? If so, why? 3. Which of the four fundamental spaces of A are equal to those of U? If so, why? Note that parts (1) and (3) are asking different questions. Not all subspaces of equal dimension are equivalent.

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A. All about that Basis II
Find the matrix P that transforms S₁ to S₂ for the following pairs of bases.
1. S₁ = {(2,5), (1, 1)}, S₂ = {(1, 3), (0, 2)}
2. S₁ = {(1,0), (0, 1)}, S₂ = {(a, b), (c,d)}
3. S₁ = {(a, b), (c,d)}, S₂ = {(1,0), (0, 1)}
4. What conditions on a,b, c, and d make part (c) impossible? Why?
B. Fun Subspaces
Consider the following 3 x 4 matrix A and its Reduced Row Echelon form, denoted U.
[1 2 0 1]
[1 0-4 17
A 0 1 20 U= 01 2 0
1 201
00 0 0
7
.
1. Find a basis and dimension for the four fundamental subspaces of A and U.
2. Which of the four fundamental spaces of A have the same dimension as those of U?
If so, why?
3. Which of the four fundamental spaces of A are equal to those of U? If so, why?
Note that parts (1) and (3) are asking different questions. Not all subspaces of equal
dimension are equivalent.
Transcribed Image Text:A. All about that Basis II Find the matrix P that transforms S₁ to S₂ for the following pairs of bases. 1. S₁ = {(2,5), (1, 1)}, S₂ = {(1, 3), (0, 2)} 2. S₁ = {(1,0), (0, 1)}, S₂ = {(a, b), (c,d)} 3. S₁ = {(a, b), (c,d)}, S₂ = {(1,0), (0, 1)} 4. What conditions on a,b, c, and d make part (c) impossible? Why? B. Fun Subspaces Consider the following 3 x 4 matrix A and its Reduced Row Echelon form, denoted U. [1 2 0 1] [1 0-4 17 A 0 1 20 U= 01 2 0 1 201 00 0 0 7 . 1. Find a basis and dimension for the four fundamental subspaces of A and U. 2. Which of the four fundamental spaces of A have the same dimension as those of U? If so, why? 3. Which of the four fundamental spaces of A are equal to those of U? If so, why? Note that parts (1) and (3) are asking different questions. Not all subspaces of equal dimension are equivalent.
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