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| ``Proving the Null(A)=Null(U)''
by zee on 2009-10-20 18:31:56 |
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| | Let A be a mxn matrix and let U be an upper echelon form. I need to prove that Null(A)=Null(U). My teacher told us to assume that A is a subset of U and then that U is also a subset of A. Can you shed some light? Thanks. |
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