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Linear Algebra and Its Applications
· Problem 2.5.19
Vector Spaces — Gilbert Strang
Mathematics · graphs-and-networks
Problem
Why does the nullspace of
A
T
A
A^T A
A
T
A
contain
(
1
,
1
,
1
,
1
)
(1,1,1,1)
(
1
,
1
,
1
,
1
)
? What is its rank?
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