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数学
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n趋向无穷求极限lim[x^3+x^3/(1+x^2)+⋯+x^3/(1+x^2)^n]
人气:455 ℃ 时间:2020-05-19 09:08:23
解答
x=0时,原式=0;
x≠1时,原式为等比数列,公比 0
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