*要解釋/步驟...THX:)*
更新1:
Question link : http://img8.imageshack.us/img8/7214/001aox.jpg
Maths F4...6
2011-04-24 7:52 am
Question link : http://img8.imageshack.us/img8/7214/001aox.jpg
*要解釋/步驟...THX:)*
*要解釋/步驟...THX:)*
回答 (1)
2011-04-24 8:21 am
✔ 最佳答案
22 log_4(3x) - log_4(x - 1) = log_2(3)log(3x)/log4 - log(x - 1)/log4 = log3/log2(1/2)[log(3x)/log2 - log(x - 1)/log2] = log3/log2log(3x/(x - 1)) = log93x = 9(x - 1)x = 3/223(a) 10^x = (2/5)(100^x + 1)xlog10 = log(2/5) + log(100^x + 1)The number one can be omitted and sox = log(2/5) + 2xx = -0.4
收錄日期: 2021-04-26 14:06:51
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110423000051KK01464