Given that f(x) is a function such that f(1)=2, f(4)=3, f(7)=4, and f^{-1}(x) is the inverse of f(x), what is f^{-1}(f^{-1}(3))?
\(f^{-1}(3) = 4\\ f^{-1}(f^{-1}(3)) = f^{-1}(4) = 7\)
+865 
