1/9= 1/A + 1/B
A是what, B是what
??
Math 問題
2006-10-29 2:48 am
回答 (3)
2006-10-29 3:03 am
✔ 最佳答案
你想問什麼？若A和B是正整數，則可以是很多不同的數值組合
因為
1/A = 1/9 – 1/B
1/A = (B – 9)/(9B)
A = 9B/(B – 9)
所以當
A = 10，B = 90
A = 12，B = 36
A = 18，B = 18
A = 36，B = 12
A = 90，B = 10
2006-10-29 4:41 am
A = 10，B = 90
A = 12，B = 36
A = 18，B = 18
A = 36，B = 12
A = 90，B = 10
A = 12，B = 36
A = 18，B = 18
A = 36，B = 12
A = 90，B = 10
2006-10-29 3:09 am
no answer because ONE equation with Two unknow.
收錄日期: 2021-04-12 21:32:19
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https://hk.answers.yahoo.com/question/index?qid=20061028000051KK03933