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 请问如何过一点作一条线的垂线?

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T O P I C    R E V I E W
DOZZ Posted - 06/11/2019 : 08:53:52 AM
弄了2个小时还没找到方法…谢谢了!
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yuki_wu Posted - 06/11/2019 : 10:47:19 PM
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

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