Difference between f(f-inverse) and (f-inverse)f Some questions on functions require students to understand the difference between ff-1 and f-1f. Though both = x, they are two different functions because their domains might be different. while Therefore, while Example f(x) = x+2, x> 0 Share this:FacebookTwitterLike this:Like Loading... Related Published by gjooheng H2 maths tutor View all posts by gjooheng