f(x)=2x=1 则f-1(1\x) -1为反函数的意思想请问下.遇见这种题.是先求出f(x)的反函数再带入1\x 还是先求出f(1\x)再求其反函数?

若f(x)满足f(x)-2f(1/x)=x,则f(x)=? 若F(x)满足f(x)+2f(1/x)=x,则f(x)= f(x)满足f(-x)+2f(x)=x+3,则f(1)等于 已知f(x)+2f(1/x)=x.x不等于0.则f(x)= f(x)满足:2f(x)-f(1/x)=x+1,求f(x) 若函数f(x)满足f(x)+2f(1/x)=5x+4/x,则f(x)= 设函数f(x)满足f(x)+2f(1/x)=x,求f(x) 已知f(x)满足2f(x)+f(1/x)=3x,求f(x) F(X)满足F(x)+2f(x分之1)=3X,求f(x) 已知f(x)满足2f(x)+f(1/x)=3x,求f(x)? 已知f(x)满足2f(x)+f(-x)=-3x+1,求f(x) 已知f(x)满足f(x)+2f(1/x)=3x,求f(x) , 已知函数f(x)满足2f(x/1)-f(x)=x ,x不等于0,则f(x)等于 已知f(x+1/x)=x^2+1/x^2+1/x则f(x) f(x)+f((x-1)/x)=2x; x!=0,1; 求f(x) f(x)+f[(x-1)/x]=2x x不等于0,1.求f(x). max{f(x),g(x)}=1/2(f(x)+g(x)+|f(x)-g(x)| f(x)=2x-1,g(x)=x^2,则f[g(x)]=?,g[f(x)]=?,f[f(x)]=?,g[g(x)]=?