r^6=1/64
求解果個過程(詳細小小) thank you!
數學白痴 求解簡單方程式一條
2007-09-07 4:44 am
回答 (3)
2007-09-07 5:00 am
✔ 最佳答案
64 = 8^2 = (2^3)^2 = 2^(3*2) = 2^6所以，
r^6 = 1/64 = 1/2^6
r^6 = (1/2)^6
r = 1/2
參考: me
2007-09-07 7:18 am
r^6 = 1/64
log r^6 =log(1/64)
6 x log r = log (1/64)
6 x log r = log 1 - log 64
log r = -(log64)/6
r = 10^((log64)/-6)
r = 10^((log(2^6))/-6)
r = 10^((6log2)/-6)
r = 10^(-log2)
r = 0.5
log r^6 =log(1/64)
6 x log r = log (1/64)
6 x log r = log 1 - log 64
log r = -(log64)/6
r = 10^((log64)/-6)
r = 10^((log(2^6))/-6)
r = 10^((6log2)/-6)
r = 10^(-log2)
r = 0.5
2007-09-07 5:01 am
r 的 ６次方 ＝ ６４分之一
→ r ＝２分之１
PS. １／２ × １／２＝ １／４
１／４ × １／２＝ １／８
１／８ × １／２＝１／１６
１／１６× １／２＝１／３２
１／３２× １／２＝１／６４→答案ANS
→ r ＝２分之１
PS. １／２ × １／２＝ １／４
１／４ × １／２＝ １／８
１／８ × １／２＝１／１６
１／１６× １／２＝１／３２
１／３２× １／２＝１／６４→答案ANS
參考: 不會很正常，別說自己是白痴，要說自己還沒學過Q_Q
收錄日期: 2021-04-13 18:12:09
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070906000051KK03786