how can You compute samtion series using matlab

write a matlab program that will approximate the series of summation of(-1) ^ n / 2 ^ n from n = 0 to n, the approximation should be aculate to five decimal places. An alternating series that converges has an error bound equal to the magnitude of the next term un the series, for example, if the series were approximated using N = 3, summation of (-1) ^ n / 2 ^ n from 0 to 3, the error will be less than or equal to 1 / 16. The problem should be solved using a while loop when the error bound is less than the desired accuracy