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O(sh)f1(x)Ǻ(sh)f(x)log3(x6)ķ(sh)[f1(a)6][f1(b)6]27tf(ab)ֵ
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B2
C3
Dlog36
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O(sh)f1(x)Ǻ(sh)f(x)log3(x6)ķ(sh)[f1(a)6][f1(b)6]27t
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B2
C3
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O(sh)P{x|x24x30}Q{x|log3xlog3(x1)log32}tPQ
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(1)(sh){an}ͨ헹ʽ
(2)O(sh)Tnb1b2bnTn
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