急~~~~2天內回答!
考慮X(-1,-2),Y(-1,y)和Z(z,-2)三點
A1)若XY=3,求y的可能值(列式計算)
A2)若XZ=5,求Z的可能值(列式計算)
快~~~~~~~~~~~~~~~~~~~~~~~~~
數學題(坐標簡介)
2012-08-11 2:14 am
回答 (1)
2012-08-11 5:34 am
✔ 最佳答案
A1)(i) - 2 - y = 3, y = - 2 - 3 = - 5
(ii) y - (-2) = 3, y + 2 = 3, y = 3 - 2 = 1.
So y = - 5 or 1.
A2)
(i) z - ( - 1) = 5
z + 1 = 5
z = 4.
(ii)
- 1 - z = 5
- 1 - 5 = z
z = - 6
so z = 4 or - 6.
收錄日期: 2021-04-25 22:39:55
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120810000051KK00695