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数学
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已知6^a=5,则lg25/lg6等于
人气:483 ℃ 时间:2020-06-06 04:04:29
解答
6^a = 5
a = log(6 ,5) (6是底数,5是真数)
lg25/lg6
= log(6 ,25)
= log(6 ,5²)
= 2log(6,5)
= 2a
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