三角長度(代數)X-CM
2012-02-11 1:39 am
圖片參考：http://imgcld.yimg.com/8/n/HA00870749/o/701202100052313873436090.jpg
........................................................如題!!!
回答 (2)
2012-02-11 1:58 am
✔ 最佳答案
如果2x最長2x<x+12
x<12
如果12最長
2x+x>12
3x>12
x>4
所以4<x<12
x=5,6,7,8,9,10,11
ans:B
參考: me
2012-02-11 1:55 am
2x < 12+x and x > 0
x < 12 and x > 0
Therefore x = 1,2,3,4,5,6,7,8,9,10,11
answer = D
x < 12 and x > 0
Therefore x = 1,2,3,4,5,6,7,8,9,10,11
answer = D
收錄日期: 2021-04-11 18:52:55
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120210000051KK00523