设f(x)=1+x/1-x,又记f1(x)=f(x),fk+1(x)=f(fk(x)),k=1,2,...则f2001(3)=
问题描述:
设f(x)=1+x/1-x,又记f1(x)=f(x),fk+1(x)=f(fk(x)),k=1,2,...则f2001(3)=
答
设f(x)=1+x/1-x,又记f1(x)=f(x),fk+1(x)=f(fk(x)),k=1,2,...则f2001(3)=