有幾條數唔識計 唔該幫我計一計
係關於log個課架 thz!
solve the following exponential equations.
1. 5^x+1 + 5^x - 5^x-1 = 29
2. 3^x+3 - 2(3^x+2) + 3^x = 30
3. 2^2x - 5(2^x) +4 = 0
4.4^2x - 10(4^x) + 16 = 0
唔該晒!!!!
收錄日期: 2021-05-01 21:17:38
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080821000051KK03575