Answer:
f(3)=3.
Step-by-step explanation:
It is given f(1)=1.We need to find f(3)
We find the original function which was represented by f(1)=1.
Replacing 1 by x :
The function can be written as f(x)=x.
To find f(3) x is replaced by 3
We have f(3)=3.
