Define a C$++$ function $($name it function$\_$StudentID where StudentID is your actual student ID number$)$ that has an integer input $($N$)$ and a double input $($x$)$ and returns a double output y$,$ where

y equals sum from k equals $1$ to N of open parentheses fraction numerator $2$ x k plus $1$ over denominator k plus $1$ end fraction plus fraction numerator k plus $1$ over denominator $2$ end fraction close parentheses

The value of N should be positive.