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如果存在x0使得f(x0)=x0,则称x0为函数f(x)的不动点,笔者在《关于函数的不动点》(见本刊2005年第2期)中给出了函数f(x)的几个结论.如果存在x0使得f(f(x0))
If there exists x0 such that f (x0) = x0, x0 is called the fixed point of the function f (x). The author gives the function in “Fixed Point About Function” Several conclusions of f (x). If x0 is present such that f (f (x0))