Consider the following series. [infinity] 1 n2 n = 1 (a) use the sum of the first 10 terms to estimate the sum of the given series. (round the answer to six decimal places.) s10 = (b) improve this estimate using the following inequalities with n = 10. (round your answers to six decimal places.) sn + [infinity] f(x) dx n + 1 ≤ s ≤ sn + [infinity] f(x) dx n