(a) Evaluate log100(二進制) + log11001(二進制)
(b) If log2.5 = k, express of the following in terms of k.
log0.4
math problems
2007-07-03 3:45 am
回答 (2)
2007-07-04 10:29 pm
✔ 最佳答案
樓上嗰位大青計錯b parta)log100(二進制) + log11001(二進制)
=log(2^2)+log(2^4+2^3+1)
=log4+log25
=log(4x25)
=2
b) log2.5 = k
consider log2.5+log0.4
= log(2.5x0.4)
= 0
k+log0.4 = 0
log0.4 = - k
2007-07-04 14:30:45 補充：
henryklau 正仆x照cop人啲嘢
2007-07-03 4:01 am
1.
100(2逵制)=4(10進制)
11001(二進制)=16+8+1=25(10進制)
log100(二進制) + log11001(二進制)
=log4+log25
=log(4*25)
=log100
=2
2.
log2.5 = k
log(10/4) = k
log10 - log 4 = k
log4 = log10 - k
log0.4
= log 4^-1
= - log4
= k - log10
2007-07-03 00:35:31 補充：
超無奈..連我打錯字果度都一齊錯- -||重有就係你問題既(a)(b)我打左1.同2. 唔好意思^^"
100(2逵制)=4(10進制)
11001(二進制)=16+8+1=25(10進制)
log100(二進制) + log11001(二進制)
=log4+log25
=log(4*25)
=log100
=2
2.
log2.5 = k
log(10/4) = k
log10 - log 4 = k
log4 = log10 - k
log0.4
= log 4^-1
= - log4
= k - log10
2007-07-03 00:35:31 補充：
超無奈..連我打錯字果度都一齊錯- -||重有就係你問題既(a)(b)我打左1.同2. 唔好意思^^"
參考: 自己計
收錄日期: 2021-04-13 00:51:20
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070702000051KK03755