80x1/100=80(2^-t)
答案係7.
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數學指數問題.80x1/100=80(2^-t)=7
2009-09-23 3:40 am
回答 (1)
2009-09-23 3:55 am
✔ 最佳答案
80 * 1/100 = 80(2^-t)1/100 = 2^-t
log (1/100) = log 2^-t
- 2 = (-t) * log2
t = 2/log2 = 6.64385619 = 7 (準確至整數)
收錄日期: 2021-04-21 22:04:38
原文連結 [永久失效]:
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