作者RLpolo123 (当然~我还没变)
看板trans_math
标题[考古] 中原91年度第二题(求答案)
时间Wed Jun 1 09:54:07 2005
The eauation of the normal line for
3 2
x -xy+3y =3 at (1,-2/3)
我看解答是
x-1 11/3
---------- = --------
y+2/3 -5
请问正确吗???
(因为我觉得这答案似乎是tangent line才对吧...并非normal line)
请各位大大解惑罗
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1F：推 beatitude:答案应该没错..218.167.165.173 06/01
2F：推 RLpolo123:了解!!谢谢大大^^ 61.60.127.18 06/02
3F：推 Ecko:我算差一个负号......囧rz218.175.128.121 06/07