how to use epsilon definition of a limit to give a formal proof that lim (-1)^n / n^2 = 0?
回答 (1)
2015-03-21 12:18 am
given an ε > 0 find a δ > 0 so hat if δ < n then | (-10^n / n² - 0 | < ε...
this last yields [ 1 / ε ] < n² ---> choose δ = 1 / √ε
this last yields [ 1 / ε ] < n² ---> choose δ = 1 / √ε
收錄日期: 2021-04-21 01:32:27
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