Forgot password?
 Create new account
View 165|Reply 0

[几何] 一个椭圆斜率恒定问题

[Copy link]

48

Threads

47

Posts

685

Credits

Credits
685

Show all posts

snowblink Posted at 2022-12-11 23:03:15 |Read mode
Last edited by snowblink at 2022-12-12 10:16:00已知椭圆$\frac{{x}^{2}}{4}\mathrm{{+}}{y}^{2}\mathrm{{=}}{1}$,点${P}\left({2\mathrm{,}1}\right){\mathrm{,}}{Q}\left({1\mathrm{,}1}\right)$,过$Q$作直线$l$交椭圆于$A\mathrm{,}B$两点,直线$PA\mathrm{,}PB$交椭圆于$
M\mathrm{,}N
$两点,求证:直线$
MN\mathrm{//}x
$轴.

手机版Mobile version|Leisure Math Forum

2025-4-20 22:25 GMT+8

Powered by Discuz!

× Quick Reply To Top Return to the list