1. The problem statement, all variables and given/known data The problem: Derive (3.3) without reference to (2.3) or (2.1). (2.1): F/P = (1 + i)^n (2.3): F/A = [(1 + i)^n – 1]/i (3.3): (F/A, i%, n) = (F/A, i%, n_1) + (F/P, i%, n_1) + (F/P, i%, n_1 + 1) + . . . + (F/P. i%, n – 1) (n > n_1) The solution (which also includes the problem) is attached as TheProblemAndSolution.png. 2. Relevant equations (F/P, i%, n) and (F/A, i%, n) 3. The attempt at a solution Here are my questions for the two things that I don't get for this problem.: 1. How exactly is (1) determined? 2. How do I go from Fig. 3-2 to (F/A, i%, n – n_1) (F/P, i%, n_1)? In other words, what the solution says is “obvious” is not obvious to me.