Browse · MATH Print → jmc algebra intermediate Problem Suppose that f is a function and f−1 is the inverse of f. If f(3)=4, f(5)=1, and f(2)=5, evaluate f−1(f−1(5)+f−1(4)). Solution — click to reveal If f(2)=5 and f(3)=4, then f−1(5)=2 and f−1(4)=3, respectively. Therefore, f−1(f−1(5)+f−1(4))=f−1(2+3)=f−1(5)=2. Final answer 2 ← Previous problem Next problem →