6. For the following function, write a summation that indicates the number of times the x++ statement is executed. Then derive a closed form for the summation (i.e., solve the summation and write your answer in a form that does not use any summation symbols). Place your solution over a common denominator and combine like terms. Does your result also correspond to the value returned by the function when you run it on your computer? Why or why not? (This is very similar to one of this week's lab problems.) int triple_foo(int n) int i, j, k,x -0 for i-0; i