网址:http://m.1010jiajiao.com/timu_id_3944407[举报]
(A) (B) (C)- (D)
设f (x)=,则f [ f ()]=
设f(x)=,则f[f()]=________.
设f(x)=,则f(f(f(10)))的值是
1
2
e
e2