哭着求你教我个设函数f(x)满足f(x)+2f(1/2)=x则f(x)=

Question

哭着求你教我个
设函数f(x)满足f(x)+2f(1/2)=x 则 f(x)=_____________

Answer 1

题目应该错了,应当为
f(x)+2f(1/x)=x
f(1/x)+2f(x)=1/x
两式联立消去f(1/x)完成