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圖用小畫家
用the curve c:y=4x-x^2
the L:y=3x
可A(4,0)
否求到B的coordinates
maths question
2010-05-30 12:19 am
回答 (1)
2010-05-30 12:21 am
✔ 最佳答案
Combine the equation of curve C and straight line L, we can find the intersection point By=4x-x^2
y=3x
So 3x=4x-x^2
x^2-x=0
x(x-1)=0
x=0 (rejected) or x=1
y=3x=3. So B (1,3)
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100529000051KK00947