題組內容
6. Give $$A = \begin{bmatrix} 1 & -1 \\ 5 & 2 \\ 0 & 0 \end{bmatrix}$$.
(c)(6%) Show that $$N(A^T)$$ and R(A) are orthogonal complement.
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6. Give $$A = \begin{bmatrix} 1 & -1 \\ 5 & 2 \\ 0 & 0 \end{bmatrix}$$.
(c)(6%) Show that $$N(A^T)$$ and R(A) are orthogonal complement.