计算:㏒2ˆ5-2㏒4ˆ10
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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