Forgot password
 Register account
original poster: isee

[函数] $f(x)$单调且满足另两个条件,求$f(2013)$

[Copy link]

6

Threads

245

Posts

6

Reputation

Show all posts

睡神 posted 2013-10-12 22:38
回复 19# kuing
一匹布那么长,看着就害怕了…
除了不懂,就是装懂

673

Threads

110K

Posts

218

Reputation

Show all posts

kuing posted 2013-10-12 22:41
回复 21# 睡神

我只不过将字号调大了点而已(为了让中括号显示得清楚些),其实过程很简短,只要看19#就可以了。

68

Threads

406

Posts

3

Reputation

Show all posts

Tesla35 posted 2013-10-17 09:09
贴个图片
1.png
2.png
摘自单墫《算两次》

673

Threads

110K

Posts

218

Reputation

Show all posts

kuing posted 2013-10-17 15:00
回复 23# Tesla35

这个证法也是夹,但是还有数归的思想在里面,巧妙些,得慢慢体会一下。

6

Threads

245

Posts

6

Reputation

Show all posts

睡神 posted 2013-10-17 17:47
回复 23# Tesla35
牛笔!我初也是这么想的,但质数时右边夹逼硬是弄不出来…
除了不懂,就是装懂

84

Threads

2340

Posts

4

Reputation

Show all posts

其妙 posted 2013-10-17 20:06
图片里的答案,第(5)式难想,其余尚可,
妙不可言,不明其妙,不着一字,各释其妙!

764

Threads

4672

Posts

27

Reputation

Show all posts

original poster isee posted 2013-10-18 09:26
我觉得2楼,4楼,19楼已经形神兼备,所以,就没理这帖了

23楼,单墫老师站在这类题的制高点,颇具匠心

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

2025-7-20 07:58 GMT+8

Powered by Discuz!

Processed in 0.013825 seconds, 23 queries