D. 3
答案:
A. 1
1、设 S=span{[223],[856]}S = \text{span}\left\{\begin{bmatrix}2 \\ 2 \\ 3\end{bmatrix}, \begin{bmatrix}8 \\ 5 \\ 6\end{bmatrix}\right\}S=span⎩⎨⎧223,856⎭⎬⎫ , T=span{[10−1],[222]}T = \text{span}\left\{\begin{bmatrix}1 \\ 0 \\ -1\end{bmatrix}, \begin{bmatrix}2 \\ 2 \\ 2\end{bmatrix}\right\}T=span⎩⎨⎧10−1,222⎭⎬⎫ , 则 S∩TS \cap TS∩T 的维度可能是? {{ select(1) }}
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