your answer is not math answer, I do this Q, I hope you can see.

We use N1 means odd, and N2 even numbers,

f(N1) means all N's images,we can say f(N1)=N2,and f(N2)=N1.(why?)

So,f(f(t))=t+ 2m contratiction.(why?)

Thank your Q.

所有跟帖： 

• MY answer is MY math answer. -15少- ♂ (299 bytes) () 06/02/2011 postreply 12:41:02

• I like the people who like Math. Let me tell you the detail. -jinjing- ♀ (177 bytes) () 06/02/2011 postreply 15:51:05

• 回複：I like math, not myth nor mystification -15少- ♂ (266 bytes) () 06/02/2011 postreply 17:24:06

• You at first you don't think f(N1)=N2,so,I ,,,,your deduce prove -jinjing- ♀ (164 bytes) () 06/02/2011 postreply 18:23:04