Forgot password?
 Register account
View 1773|Reply 2

[不等式] 求证一个不等式

[Copy link]

413

Threads

905

Posts

110K

Credits

Credits
10989

Show all posts

lemondian Posted 2017-12-14 18:43 |Read mode
已知:a,b,c是正数,且abc=1。
证明:$\dfrac{1}{a^3(b+c)}+\dfrac{1}{b^3(a+c)}+\dfrac{1}{c^3(a+b)}\geqslant\dfrac{3}{2} $

686

Threads

110K

Posts

910K

Credits

Credits
91229
QQ

Show all posts

kuing Posted 2017-12-14 19:09
见《撸题集》第 500~504 页题目 4.6.79。

413

Threads

905

Posts

110K

Credits

Credits
10989

Show all posts

 Author| lemondian Posted 2017-12-15 08:06
N人,连1000多页的题目都记得清楚!
我原想看看能不能用琴生来做,看来不行了?

Mobile version|Discuz Math Forum

2025-5-31 10:49 GMT+8

Powered by Discuz!

× Quick Reply To Top Edit