Problem 3 - 25 points Write a recursive function sumFinal) that takes as parameters an integer n and returns the value of the following sum: fu(n) = 2 + U(n-1) U(1) = 4 A non-recursive solution will not be graded. For example, U(4) = 2 + U(3); U(3) = 2 + U(2); U(2) = 2 + U(1); and U(1) = 4