Forgot password?
 Register account
View 1886|Reply 5

[数论] (z)求$x!+1=y^2$所有正整数解.

[Copy link]

413

Threads

1431

Posts

110K

Credits

Credits
11099

Show all posts

realnumber Posted 2014-4-8 13:42 |Read mode
求$x!+1=y^2$所有正整数解.

770

Threads

4692

Posts

310K

Credits

Credits
35048

Show all posts

isee Posted 2014-4-9 09:07
猜两组:
(4,5)
(5,121)
还有没有,不知

84

Threads

2339

Posts

110K

Credits

Credits
13091

Show all posts

其妙 Posted 2014-4-9 16:37
回复 2# isee
这都猜得到啊?

413

Threads

1431

Posts

110K

Credits

Credits
11099

Show all posts

 Author| realnumber Posted 2014-4-9 17:32
还有$7!+1=71^2$,$x>14$太大,几何画板算不了了.

84

Threads

2339

Posts

110K

Credits

Credits
13091

Show all posts

其妙 Posted 2014-4-9 17:41
回复 4# realnumber
几何画板是画图的,还有这种计算功能啊?

413

Threads

1431

Posts

110K

Credits

Credits
11099

Show all posts

 Author| realnumber Posted 2014-4-9 17:56
回复 5# 其妙


    当计算器算的,windows自带的也可以.

Mobile version|Discuz Math Forum

2025-5-31 10:53 GMT+8

Powered by Discuz!

× Quick Reply To Top Edit