Forgot password?
 Register account
View 1700|Reply 3

[数列] 复数数列

[Copy link]

3159

Threads

7941

Posts

610K

Credits

Credits
63770
QQ

Show all posts

hbghlyj Posted 2019-9-8 13:03 |Read mode
Last edited by hbghlyj 2019-9-8 13:34称一个复数列$\{a_n\}为有趣的,如果\left|a_1\right|=1,且\forall n∈\Bbb{N}*,4a_{n+1}^2+2a_{n+1}a_n+a_n^2=0$,求最大实数C,使得对一切有趣的复数列及正整数n,$\left|a_1+\cdots+a_n\right|\geq C$
2019高联一试最后一题

770

Threads

4692

Posts

310K

Credits

Credits
35048

Show all posts

isee Posted 2019-9-8 15:11
回复 1# hbghlyj

2019年全国高中数学联合竞赛一试试题(A卷)(扫描版)

zxxk.com/soft/11301379.html

686

Threads

110K

Posts

910K

Credits

Credits
91229
QQ

Show all posts

kuing Posted 2019-9-8 15:23
回复 2# isee

排版这么差还好意思冒充扫描版啊……

107

Threads

225

Posts

2905

Credits

Credits
2905

Show all posts

facebooker Posted 2019-9-8 17:31
Last edited by facebooker 2019-9-9 04:33回复 1# hbghlyj
求与标答不同的方法

Mobile version|Discuz Math Forum

2025-5-31 10:40 GMT+8

Powered by Discuz!

× Quick Reply To Top Edit