f2聯立方程 5POINTS

2008-03-21 10:29 pm
x
y- -- +1-0
3

5x-6y-2=0

請列出步驟
更新1:

Y-X/3+1=0 5X-6Y-2=0

回答 (4)

2008-03-22 12:55 am
✔ 最佳答案
y-x/3+1=0....(1)
5x-6y-2=0 ...(2)
From(1),
y-x/3+1=0.
y=x/3-1..(3)
Sub(3) into (2)
5x-6(x/3-1)-2=0
5x-2x+6-2=0
3x=-4
x=-4/3
Sub x=-4/3 into (1)
y-(-4/3)/3+1=0
y+4/9+1=0
y=-13/9
∴The solutions are x=-4/3, y=-13/9
參考: Myself
2008-03-21 10:56 pm
OK
2008-03-21 10:54 pm
I can't fully understand the meaning of the first equation
may be you can use
y/3 to espress y
---
3
something like that
2008-03-21 10:45 pm
f2聯立方程 5POINTS
x
y- -- +1-0
3

5x-6y-2=0

請列出步驟


收錄日期: 2021-04-29 21:47:15
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