還有第15題 它是數字相減不是定值 可是數字要相減或相加等於同一個定值 才能算出來吧 這題也請高手求救?
回答 (2)
2015-08-23 1:00 pm
同時平方:
A^2 = 25 + 10 - 10√10 = 35 - 10√10
B^2 = 26 + 9 - 6√26 = 35 - 6√26
C^2 = 27 + 8 - 12√6 = 35 - 12√6
同時減35:
A1 = -10√10
B1 = -6√26
C1 = -12√6
同時除以2√2:
A2 = -5√5
B2 = -3√13
C2 = -6√3
同時平方:
A3 = 125
B3 = 117
C3 = 108
=> A3 > B3 > C3
=> A2 < B2 < C2
=> A < B < C = Answer
A^2 = 25 + 10 - 10√10 = 35 - 10√10
B^2 = 26 + 9 - 6√26 = 35 - 6√26
C^2 = 27 + 8 - 12√6 = 35 - 12√6
同時減35:
A1 = -10√10
B1 = -6√26
C1 = -12√6
同時除以2√2:
A2 = -5√5
B2 = -3√13
C2 = -6√3
同時平方:
A3 = 125
B3 = 117
C3 = 108
=> A3 > B3 > C3
=> A2 < B2 < C2
=> A < B < C = Answer
2015-08-23 1:11 pm
用計算機把a,b,c變成小數左比較大小
A大約是1.83772234
B大約是2.099019514
C大約是2.367725298
所以C>B>C
A大約是1.83772234
B大約是2.099019514
C大約是2.367725298
所以C>B>C
收錄日期: 2021-04-18 00:03:06
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20150823044127AAQXeId