明顯需使用對數
x=log27/log117=3log3/(2log3+log13)
y=log27/log169=3log3/2log13
所求=(2log3+log13)/3log3-log13/3log3=2/3
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明顯需使用對數
x=log27/log117=3log3/(2log3+log13)
y=log27/log169=3log3/2log13
所求=(2log3+log13)/3log3-log13/3log3=2/3
Users viewing this question
are also looking at these questions 😉