Fundamental Subspace of a Matrix:

3’rd columns, is a basis of the column space of A. The reduced row echelon matrix in the homogeneous system is . Thus, is a basis for the null space of A. Since the bases of the column space or row space of A consist of 3 vectors and the basis of the null space of A consists of 1 vector, then . Note: In the above example, 2. ................
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