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 请问如何过一点作一条线的垂线？		  New Topic  Reply to Topic
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DOZZ

China
1 Posts
Posted - 06/11/2019 :  08:53:52 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
弄了2个小时还没找到方法…谢谢了！

yuki_wu

896 Posts
Posted - 06/11/2019 :  10:47:19 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,

我没有理解你的问题。

你是指要过某一点作一条直线的垂线吗？这种情况可以通过已知直线的斜率 (k) 及已知点 (x1,y1) 计算得到垂线的方程来画图：
y = (-1/k) * x + b
代入 (x1, y1) 求得 b。

Regards,
Yuki

OriginLab
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