Find the partial sum s_5 of the series sigma_n = 1^infinity 5/n2^n. (round your answer to five decimal places.) estimate the error using the formula below. (round your answer to five decimal places.) r_n lessthanorequalto a_ n + 1/1 - lim_n rightarrow infinity a_n + 1/a_n using the formula from part (b), find a value of n so that sn is within 0.5 of the sum. use this value of n to approximate the sum of the series. (round your answer to six decimal places.)