L1: 3x+5y-14=0
L2: 2x-5y-1=0
不畫圖如何找到intersection 呢?
如何找直線的intersection?
2009-02-01 12:50 am
回答 (1)
2009-02-01 1:34 am
✔ 最佳答案
L1: 3x+5y-14=0...(1)L2: 2x-5y-1=0...(2)
(1)*2-(2)*3
10y+15y-28+3=0
25y=25
y=1
So x=3
收錄日期: 2021-04-26 13:04:31
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090131000051KK01247