How to solve this question? I am confused about the partial sum here.

Homework: 810.6 Homework 2018F Green Score: 0 of 1 pt 4 8 of 16 (16 complete)v p HW Score: 93.75%, 15 of 16 pts 10.6.30 i5 Question Help '6 Let 2 (1)k"1ak be a convergent alternating series with terms that are nonincreasing in magnitude. Let R" = S Sn be the remainder in approximating the value of that series by the sum of its rst n terms. Then k = 1 ( 1)k s an +1. In other words, the magnitude of the remainder is less than or equal to the magnitude of the rst neglected term. For the convergent alternating series 2 IR k=0 (5k+2 , evaluate the nth partial sum for n = 2. )3 Then nd an upper bound for the error ls Snl in using the nth partial sum Sn to estimate the value of the series 8. The nth partial sum for the given value of n is 0.1220845'. (Type an integer or a decimal. Round to seven decimal places as needed.) Using the provided theorem, the upper bound for the error is (Type an integer or a decimal. Round to seven decimal places as needed.)