... log8=3*log2=3*0.3010=0.9030 log9=2*log3=2*0.4771=0.9542 log10=1. ,log2=a ... 是怎麼算是log10*2-log5嗎. , log5怎么算底为1 要详解答案是1-log2怎么算呢? 5.
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