If x,100,y forms a geometric sequence, find the value of log x+log y
(please show detailed steps)
Geometric sequence question
2008-10-12 7:59 pm
回答 (1)
2008-10-12 8:26 pm
✔ 最佳答案
Consider the first two terms. Common ratio = 100/x
Consider the last two terms. Common ratio = y/100
Hence, 100/x = y/100
xy = 10000
log(x) + log(y)
= log(xy)
= log(10000)
= log(10)4
= (4)log(10)
= 4 x 1
= 4
=
收錄日期: 2021-04-25 13:51:18
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081012000051KK00629