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WLet martix A is any (mxn) matrix and let B is a square matrix. Show that, any vector b' chosen from the column space

WLet martix A is any (mxn) matrix and let B is a square matrix. Show that, any vector b' chosen from the column space of 'A' can be found inside the column space of C AxB if and only if the B matrix is diagonal.

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