π 的遁環數字是什麼？數學高手請幫忙解答！（二十二分喔）

pi is not a 遁環數字, since it is not a rational number ,

rational number means the number can be represent as a form of p/q

where both p and q are national number ( i.e. 1 ,2 , 3)

for example 3.3333...=10/3 so it is rational number ,

it is a 遁環數字 if and only if it is a rational number

don't ask me how can i prove pi is not a rational number

because you can not understand the theroy that we use

reference PM Paper II number 8 好似係

2010-02-08 22:20:35 補充：
打錯 =]

2010-02-08 22:23:13 補充：
唔係呀 , 如果係遁環數字 , 錦個個數一定係有理數黎ga ,

例如0.123456789123456789錦 , 係可以令佢變成一個份數 ,

=123456789/999999999

2010-02-08 22:24:05 補充：
無理數 係冇遁環數字ga , 你要弄清楚e 兩個係唔同的概念

2010-02-08 22:24:49 補充：
遁環數字係有理數 ,

無理就你無理 , 就係咩關係都冇 .....

2010-02-08 22:24:54 補充：
係

一句講晒,無理 = 沒有遁環數字
有理 = 有遁環數字