计算:㏒2ˆ5-2㏒4ˆ10

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计算:㏒2ˆ5-2㏒4ˆ10
x){nuӭO2RS67465rL C"}Š l44'?HH D "`1<;6`ɫXl>vĪo=9yFq 4L5A"p!#ejkd{h

计算:㏒2ˆ5-2㏒4ˆ10
计算:㏒2ˆ5-2㏒4ˆ10

计算:㏒2ˆ5-2㏒4ˆ10
=5log2-20log4
=5log2-40log2
=-35log2

哪个是底数···

原式=lon2^5-log2^(2*5)=long2^5-log2^2-log2^5=-1