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你们为啥都不看题……

Posted by frkstyc at 2009-06-22 05:30:40 on Problem 3707
In Reply To:要求H可逆? Posted by:fuch at 2009-06-21 00:45:06
还是线性代数都已经还了……

你算出来的 H 一定要是正交矩阵才行……

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