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数列 a_1 = 1 , a_(n+1) = (a_n + 2/a_n)/2 ( 的Newton迭代)。计算 并与 比较。
数列 a_1 = 1 , a_(n+1) = (a_n + 2/a_n)/2 ( 的Newton迭代)。计算 并与 比较。
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