1) Write 2 simultaneous equations ( with x and y ) which have no
common solutions.
2)Write 2 simultaneous equations ( with x and y ) which have
infinitely many solutions .
條式愈簡單愈好
極度淺易的中二數學問題
2009-03-17 4:15 am
回答 (1)
2009-03-17 4:44 am
✔ 最佳答案
1)y=x+2
y=x+3
---------------------
y=2x
y=2x+1
2)
y=x+2
y=x+2
----------------------
y=2x
y=2x
2009-03-16 20:46:09 補充：
第2題寫得好D應該如下:
x+y+2=0
2x+2y+4=0
x+y=0
2x+2y=0
收錄日期: 2021-04-22 00:47:04
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090316000051KK01596