Hi. I answered this question but I have no idea if I did it correctly...

Question: Find a that fulfills: if , then

Answer: =

That part was easy, now is the part I don't know if I did logically/correctly...

The function is not defined at so we can require (so the x can stay away from )

so that

So now we get

and since ,

Therefore if we require , we will for sure get for

and so

Thanks!

**edit thanks for your advice!