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The Singular Value Decomposition
Singular values, the SVD, the pseudoinverse, low-rank approximation, and principal component analysis.
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A
5
×
8
5\times8
5
×
8
matrix has rank
3
3
3
.
What is
dim
Null
A
\dim\operatorname{Null}A
dim
Null
A
?
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AC
7
8
9
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4
5
6
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1
2
3
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0
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