log以3为底数18的对数减log以3为底数2的对数
log以3为底数18的对数减log以3为底数2的对数
数学人气:315 ℃时间:2020-02-21 02:33:46
优质解答
log3(18)-log3(2)=log3(18/2)=log3(9)=2
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