Forgot password
 Register account
View 1711|Reply 2

[不等式] 一道三元不等式

[Copy link]

3200

Threads

7827

Posts

52

Reputation

Show all posts

hbghlyj posted 2019-7-24 23:35 |Read mode
设$a, b, c \geq 0, \quad a+b+c=2$,求证$a^{2} b^{2}+b^{2} c^{2}+c^{2} a^{2} \leq 1$
110排列取最大值

673

Threads

110K

Posts

218

Reputation

Show all posts

kuing posted 2019-7-25 00:22
与《撸题集》P.632 题目 5.1.22 是等价的。

3200

Threads

7827

Posts

52

Reputation

Show all posts

original poster hbghlyj posted 2019-7-25 10:37
回复 2# kuing
看来我做对了。原题是<=2,不能取等。我做得<=1。这里真是交流大大小小疑难问题的好去处。

Quick Reply

Advanced Mode
B Color Image Link Quote Code Smilies
You have to log in before you can reply Login | Register account

$\LaTeX$ formula tutorial

Mobile version

2025-7-15 13:57 GMT+8

Powered by Discuz!

Processed in 0.012631 seconds, 22 queries