Wide screen
User name
E-mail
Remember me
Forgot password?
Password
Login
Create new account
My Center
论坛
悠闲数学娱乐论坛(第3版)
淘帖
大家一起来整理好帖子
相册
Album
标签
查看所有主题标签
搜索
初等数学讨论
高等数学讨论
TeX / LaTeX
Search
AND
OR
exact
regexp
全文
Aa
This Forum
Users
悠闲数学娱乐论坛(第3版)
»
论坛
›
数学区
›
初等数学讨论
›
crunodal cubic的构造方法
Return to list
New
View:
54
|
Reply:
2
[几何]
crunodal cubic的构造方法
[Copy link]
[复制标题+链接+出处]
hbghlyj
hbghlyj
Offline
Credits
65393
3151
Threads
8383
Posts
610K
Credits
Credits
65393
Show all posts
Send PM
hbghlyj
Post time 2024-2-14 20:29
|
Read mode
rdcu.be/buOiI
researchgate
轨迹构造 由 θ=O,V,P,Q,H,k 生成的crunodal cubic
Reply
Report
hbghlyj
hbghlyj
Offline
Credits
65393
3151
Threads
8383
Posts
610K
Credits
Credits
65393
Show all posts
Send PM
Author
|
hbghlyj
Post time 2024-2-14 20:40
二次曲线 ω 由 3 个点和 2 条切线确定:
$O,B_2,S$ 属于二次曲线 ω
$l\kern-1ex\widetilde{\vphantom{l}\hphantom{n}},QB_2$是二次曲线ω的切线
用$M_1$和$M_2$表示直线$VB_1$和二次曲线ω的公共点。当线$VB_1$绕点$V$旋转时,点$M_1$和$M_2$描述了该曲线。
Reply
Report
hbghlyj
hbghlyj
Offline
Credits
65393
3151
Threads
8383
Posts
610K
Credits
Credits
65393
Show all posts
Send PM
Author
|
hbghlyj
Post time 2024-2-14 20:45
点$B_2$是用完全四边形构造的,$(H\ B_1\ O\ B_2 ) = −1$.
Reply
Report
Return to list
New
手机版
|
悠闲数学娱乐论坛(第3版)
2025-3-6 11:34 GMT+8
Powered by
Discuz!
×
Quick Reply
To Top
Return to the list