已知f[(1-x)/(1+x)]=(1-x²)/(1+x²)则f(x)的解析式可取为f(x)=

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已知f[(1-x)/(1+x)]=(1-x²)/(1+x²)则f(x)的解析式可取为f(x)=已知f[(1-x)/(1+x)]=(1-x²)/(1+x²)则f(

已知f[(1-x)/(1+x)]=(1-x²)/(1+x²)则f(x)的解析式可取为f(x)=
已知f[(1-x)/(1+x)]=(1-x²)/(1+x²)则f(x)的解析式可取为f(x)=

已知f[(1-x)/(1+x)]=(1-x²)/(1+x²)则f(x)的解析式可取为f(x)=