函数 (27 15:8:55)

问题描述:

函数 (27 15:8:55)
设n为正整数,规定fn(x)=f{f【.f(x).】}.已知f(x)=2(1-x) ,(o≤x≤1)和x-1(1<x≤2)
(1)解不等式:f(x)≤x
(2)设集合A={0,1,2},对任意x属于A,证明f3(x)=x
(3)求证f2008(8/9)的值
                                                                                                 
                                 

1、
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