2乘3既y字方 等於32
2 x 3^y=32
求y
中4數學問題!!請高手教教我
2008-10-19 1:33 am
回答 (4)
2008-10-19 1:47 am
✔ 最佳答案
2 ‧3y =323y =16
log 3y = log 16
y (log3) = log 16
y= log 16/ log 3
y 大約是 2.52372
2008-10-19 4:51 am
2 x 3^y=32
3^y=16
log 16/log y=3
y=2.52
3^y=16
log 16/log y=3
y=2.52
2008-10-19 2:11 am
用log
左log, 右log
左log, 右log
2008-10-19 1:47 am
2*3^y=32
3^y=16
ylog3=log16
y=log16/log3=2.52//
3^y=16
ylog3=log16
y=log16/log3=2.52//
收錄日期: 2021-04-23 23:15:08
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081018000051KK01616