Part 3 of 3 The function f(x)=x is one-to-one. a. Find an equation for f(x), the inverse function. b. Verify that the equation is correct by showing that f(f(x)) =x and f (f(x)) = x. a. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. f(x)=x4, for x 0 B. f(x)= for all x Oc. f(x)=, for x 0 b. Verify that the equation is correct. f(1 (x)) = f(x) and 1-1 (1(x)) 11 () Substitute. and =X = X Simplify The equation is not verified. verified.