matlab question , how to solve by using while function

lim S(n) = 1 n-00 where n S(n) = 4 (-1) 2k + 1 k=0 (a) Use MATLAB to estimate the value of ze by calculating the first 50 terms of the series S(n), i.e., S(50). (b) Use MATLAB to find the minimum number of terms, n, of the series S(n) that must be calculated to ensure that S(n) 10-4