Please help me 1 Question
The question link is
http://www.sendspace.com/file/x8v9xh
Thank you so much for your help!
equation of st. line & circle
2011-02-21 3:29 am
回答 (1)
2011-02-21 3:43 am
✔ 最佳答案
Actually, your work is in the right direction, but you made a mistake in the last part.√[5(√5-5)^2]=√5*√[(√5-5)^2]=√5*-(√5-5)=-5(1-√5)=5(√5-1)
Note that for x<0, √(x^2)=│x│=-x
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原文連結 [永久失效]:
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