Solution: If f(x)+2f(1/x)=3x
f(2)=?
What will be the result?
I guessed the result correctly, but not the process.
Cheng Su, after all, the protagonist is a bit different, so he used a lot of imagination to fill in the bugs.
My mind is wide open. I came up with it when I saw this question. It is my first time to publish a post. I am a newbie. There are many shortcomings. I hope all readers can provide criticisms and suggestions.
Conception: