已知f(x+1/x)=x^2+1/x^2,求f(x)详解
问题描述：
已知f(x+1/x)=x^2+1/x^2,求f(x)详解
答
f(x+1/x)=x^2+1/x^2=(x-1/x)^2+2 f(x)=x^2+2
已知f(x+1/x)=x^2+1/x^2,求f(x)详解
f(x+1/x)=x^2+1/x^2=(x-1/x)^2+2 f(x)=x^2+2