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19 lines
621 B
Typst
19 lines
621 B
Typst
#import "../styles.typ": exercise_sol, tab
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#import "../math.typ": span
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#exercise_sol(type: "answer")[
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求 $FF^3$ 中的四个不同的向量,其张成空间为
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$ {(x, y, z) in FF^3 : x + y + z = 0} $
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][
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取 $u = (1, 0, -1)$,$v = (0, 1, -1)$。根据张成空间的定义,
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$ span(u, v) = {(x, y, -x-y) in FF^3 : x,y in FF} $
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#tab 这已经是题目所要求的张成空间了。为了补足四个不同的向量,我们可以取 $w_1 = 2u$,$w_2 = 2v$。
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#tab 综上所述,题目要求的四个不同的向量可以是
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$ (1, 0, -1)"," wide (0, 1, -1)"," wide (2, 0, -2)"," wide (0, 2, -2) $
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]
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