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    Undergrad Is the Solution Set of Ax=b a Subspace of R^n?

    Please anyone solve this question or can even email me on my ID abu_95bakar@yahoo.com... For the following question determine whether the set S is a sub space of the given vectorspace V. v=Rn( where n represent dimension), S is the solution set of the sysytem Ax=b, where A is an mxn...