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数学
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lim( 根号(n+1)-根号n )
人气:274 ℃ 时间:2020-01-14 16:58:26
解答
注:以下“lim”均省略“n→+∞”根号(n+1)-根号n={[根号(n+1)-根号n][根号(n+1)+根号n]}/[根号(n+1)+根号n]…………分子分母同乘[根号(n+1)+根号n]=1/[根号(n+1)+根号n]……………………分子有理化因为lim[根...
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