第1个回答 2009-07-18
当X=84时,即X<1000时
f(84)=f{f(89)}
f(89)=f{f(94)}
…………………
f(994)=f{f(999)}
f(999)=f{f(1004)}
当X=1004时,即X>1000时,
f(1004)=1001 则
f(999)=f(1001)=998
f(998)=f{f(1003)}=f(1000)=997
f(997)=f{f(1002))=f(999)=998
f(994)=f{f(999)}=f(998)=997
f(989)=f{f(994)}=f(997)=998
f(984)=f{f(989)=f(998)=997
^
f(84)=f(89)=997
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