logx2+log16x=5
find x
我唔識計上面條數, help!!!!
唔該show 埋step
log數唔識做!!!唔該
2010-11-08 9:51 am
回答 (1)
2010-11-08 10:06 am
✔ 最佳答案
LogaB=(LogB)/(Loga)LogX2+Log16X=5
Log2/LogX + LogX/Log16 = 5
Log2Log16 + (LogX)^2 = 5LogXLog16
(LogX)^2 - 5LogXLog16 + Log2Log16 = 0
LogX = 5.959779503 or LogX = 0.06082041
X=911547.9174 or X = 1.150324607
收錄日期: 2021-04-27 13:35:43
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20101108000051KK00127