若log2=a，試以a表示log5

2006-12-31 4:23 am

若log2=a，試以a表示log5。請問這條數該如何計?

回答 (4)

2006-12-31 4:26 am

✔ 最佳答案

log10 = log(2x5)=log2 + log5

log10 = 1

so, 1 = log2 + log5
1 = a + log5

log5 = 1 - a

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2006-12-31 5:27 am

log10 = log(2x5)=log2 + log5

log10 = 1

1 = log2 + log5

1 = a + log5

log5 = 1 - a

參考: me

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2006-12-31 4:41 am

1.log10 = log(2x5)=log2 + log5

log10 = 1

so, 1 = log2 + log5
1 = a + log5

log5 = 1 - a

2.1-a

PS : 1= log 10

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2006-12-31 4:27 am

1-a

PS : 1= log 10

參考: ME

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