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Mathematics 7 Online
OpenStudy (anonymous):

I do not understand this question from D.Lays book of linear algebra and its applications. "A scientist solves a nonhomogeneous system of ten linear equations in twelve unknowns and finds that three of the unknowns are free variables. Can the scientist be certain that, if the right sides of the equations are changed, the new nonhomogeneous system will have a solution? Discuss." Chapter: Rank of a Matrix

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