Question

f(f(x)) = x^2 -x +1 , what is f(x) ?

Answer 1

They didnt define f(x) for you?

Answer 2

f(x) i guess it's a 2nd degree function

Answer 3

Are you sure its not f(x) instead of f(f(x))?

Answer 4

yes

Answer 5

it's f(f(x)) which means fof(x)

Answer 6

I know I just wanted to make sure

Answer 7

Assuming this is what you mean.
f(x) = x^2-x+1
then f(f(x))=x^4 - 2 x^3 + 2 x^2 - x + 1

Answer 8

Just take your function and replace every x with it and simplify.

Answer 9

it's inverse...

Answer 10

you have to find the function,it's not given

Answer 11

(1 ± Sqrt[-3 + 4 x])/2

Answer 12

what is that?

Answer 13

You will get two functions.
one will be (1 + Sqrt[-3 + 4 x])/2 and the other one will be (1 - Sqrt[-3 + 4 x])/2
depends on what you need