1. What does the following recursive function do, in general ? bool Mistery (char s[], int low, int high) { } if (high y) return (x + y); else return fun (x + 1, y - 1); What is the output of the following statements ? a. cout < < fun ( 7, 12); b. cout < < fun (4,8); 3. Consider a function, power, that takes as parameters two integers x and y such that x is nonzero and returns xy. Use the following definition to calculate xv. If y >= 0: If y 1 power (x,y) = 1/( power (x, y)) a. Write an iterative version of the power function above b. Write an recursive version of the power function above