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Matrices : Rank

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A, B and C are matrices. What are their ranks?
1 2
3 4
5 6
1 1
1 1
3 3
7 7
11 11

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The ranks of three matrices are found. The solution is detailed. The response was given a rating of "5" by the student who originally posted the question.

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If you consider the rows of an m x n matrix as vectors in R^n, they span a subspace called the row space of the matrix. The dimension of this space is called the "row rank" of the matrix. Similarly, if you consider the columns as vectors in R^m, they also span a subspace of R^m called the column space, and the dimension ...

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