对于数列{an},a1=4,an+1=f(an)n=1,2…,则a2011等于( )
x |
1 |
2 |
3 |
4 |
5 |
f(x) |
5 |
4 |
3 |
1 |
2 |
A.2 B.3 C.4 D.5
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对于数列{an},a1=4,an+1=f(an)n=1,2…,则a2011等于( )
x |
1 |
2 |
3 |
4 |
5 |
f(x) |
5 |
4 |
3 |
1 |
2 |
A.2 B.3 C.4 D.5