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0..0 an≠0) 100 00..0 解 1a,0..0 0..0 100 00 aa1 2 1 2 1 1 2 2 2 1 2 3 1 1 1 ... 1 1 0 ... 0 (3) ( ... 0) ... ... ... ... ... 1 0 0 ... 1 1 1 ... 1 0 0 ... 0 1 0 ... 0 1 0 ... 0 ... ... ... ... ... ... ... ... ... ... 1 0 0 ... 1 0 0 ... 1 .. : . (1 ) n n n i i n n n n i i a a a a a a a a a a a a a a a a a a = =  − = = −   解
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