lg既問題?

👨🏻‍🏫 學術台數學

[匿名]

2008-01-02 1:00 am

lg(9)16 * lg(3)225 * lg(125)81=?

* 係乘既意思, ( ) 係 base number

唔該晒

更新1:

唔岩,題目打錯左,係lg(9)16 * lg(32)25 * lg(125)81=? sorry, can you do again?

回答 (2)

2008-01-09 5:29 am

✔ 最佳答案

lg916 * lg3225 * lg12581
=(4lg2/2lg3)(2lg5/5lg2)(4lg3/3lg5)
=16/15

參考: ME

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Chu

2008-01-02 1:18 am

lg(9)16 * lg(3)225 * lg(125)81
={[log16]/[log9]}*{[log225]/[log3]}*{[log81]/[log125]}
=5.661900329

參考: ...me...

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