Matrices

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Last updated 1:32 PM on 10/16/26
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4 Terms

1
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An invertible matrix is

row-equivalent to an identity matrix

2
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A square matrix is invertible iff

its set of columns is linearly independent

3
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A function is invertible iff

it is one-to-one

4
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A linear transformation T:Rn->Rm is onto Rm if

there is a pivot in every column of the corresponding matrix