Question: When the error vector e = b A is non zero, in which of the following subspaces does e reside in? The null space

When the error vector e = b A is non zero, in

When the error vector e = b A is non zero, in which of the following subspaces does e reside in? The null space N(A). The column space of A. The row space of A. The left nullspace N(A").

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