Please use MATLAB It's numerical method problem

Write a computer program to evaluate for arbitrary n, and apply it to the series given below. Do the calculation by both the methods LS and SL. For LS, compute and sum the terms from the largest term first to the smallest term last. For SL, do the calculation in the reverse order. Calculate a true value for S using the given answer, and compare it with the values obtained by LS and SL. 2n +3 4 2(n+1)(n+2) Use n = 10, 50, 100, 500, 1000, 5000