【paikeacaro】評論
loga(m/n)=logam-loganlog21/2+log22/3+log23/4+......+log2127/128=log21-log22+log22-log23+log23-log24+...+log2127-log2128=log21-log2128=log21/128=log22-7=-7 請教大師是我算錯還是答案給錯