+0  
 
-1
106
1
avatar

If $f(x)=\frac{ax+b}{cx+d}, abcd\not=0$ and $f(f(x))=x$ for all $x$ in the domain of $f$, what is the value of $a+d$?

 Feb 27, 2022
 #1
avatar+117224 
0

You have to be joking.

 

This format is not acceptable.

 Feb 27, 2022

8 Online Users