作者mqazz1 (无法显示)
看板Math
标题[线代] orthogonal complement
时间Mon Jun 6 21:12:27 2011
find the orthogonal complement of the subspace of R^3 spanned by
(1, 2, 1)^T and (1, -1, 2)^T
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我这样写
[a] [1] [a] [ 1]
<[b],[2]> = 0 <[b],[-1]> = 0
[c],[1] [c] [ 2]
解联立 c = 3b
[ a] [1] [0]
span{[ b]} => span{[0], [1]}
[3b] [0] [3]
解答是(-5, 1, 3)^T
请问我是什麽地方错了?
谢谢!!
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◆ From: 61.228.28.13
1F：推 smartlwj :c=3b 然後代回a+2b+c=0 => a=-5b 06/06 21:16
2F：→ mqazz1 :谢谢!! 06/07 00:02