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Chapter 4 Linear systems of equations

So far, we have begun with a matrix \(A\) and a vector \(\xvec\) and formed their product \(A\xvec = \bvec\text{.}\) We would now like to turn this around: beginning with a matrix \(A\) and a vector \(\bvec\text{,}\) we will ask if we can find a vector \(\xvec\) such that \(A\xvec = \bvec\text{.}\) This will naturally give us a set of linear equations called a linear system.