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关于ｆ［ψ（Ｘ）］＝ψ（Ｘ）中映射ｆ的存在性４３００１２武汉铁路成人中专章曙雯４３００７０武汉体育学院王晓芬文［１］过论了函数关系ｆ（ｓｉｎｘ）＝ｓｉｎｘ（ｎ∈Ｎ）中映射ｆ的存在性问题，指出ｎ为底数时ｆ不存在．类似的函数关系亦见于各种书刊．例如：设，...
On the existence of the mapping f in f[ψ(X)]=ψ(X)430012 Wuhan Railway Adult Technical College Zhang Wenwen430070 Wuhan Institute of Physical Education Wang Xiaofen Wen[1] has discussed the functional relationship f(sinx)=sinx(n∈N ) The existence of the problem of mapping f, pointed out that when n is the base, f does not exist. Similar functional relationships are also found in various publications. For example: set,...