D=P(1-R%) [R] ,,點做呀?
回答 (3)
2006-11-04 5:50 pm
✔ 最佳答案
D=P(1-R%)D/P=1-R%
D/P=1-R/100
100(D/P)=100(1-R/100)
100(D/P)=100-R
100(D/P)+R=100
R=100-100(D/P)
R=100(1-D/P)
p.s
R%=R/100
最後no.7行的步驟是抽100出黎~
No.5行是將100乘入括號每一個數~
2006-11-04 3:29 am
D=P(1-R%)
D=P(1-R/100)
D/P = 1 - R/100
R/100 = 1 - D/P
R = (1-D/P)* 100
D=P(1-R/100)
D/P = 1 - R/100
R/100 = 1 - D/P
R = (1-D/P)* 100
2006-11-04 3:13 am
D = P (1 - R%)
100 * D = 100 * P - P * R% *100
100D = 100P - PR
PR = 100P - 100D
R = 100(P - D) /P
100 * D = 100 * P - P * R% *100
100D = 100P - PR
PR = 100P - 100D
R = 100(P - D) /P
收錄日期: 2021-04-12 18:09:32
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061103000051KK03002