【log(4) 3+ log(8) 3】乘 log(3) 2得多少
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【log(4) 3+ log(8) 3】乘 log(3) 2得多少
换底公式:
【log(4) 3+ log(8) 3】乘 log(3) 2
=(lg3/lg4+lg3/lg8)*lg2/lg3
=(1/2lg3/lg2+1/3lg3/lg2)*lg2/lg3
=5/6lg3/lg2*lg2/lg3
=5/6
【log(4) 3+ log(8) 3】乘 log(3) 2
=(lg3/lg4+lg3/lg8)*lg2/lg3
=(1/2lg3/lg2+1/3lg3/lg2)*lg2/lg3
=5/6lg3/lg2*lg2/lg3
=5/6
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用换底公式简化[log(4)3+log(8)3][log(3)2+log(9)2]
(log(4)3+log(8)3)(log(3)2+log(9)2) 怎么个思路
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