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求极限 n趋向无穷 2^n+1 + 3^n+1/2^n+3^n
人气:261 ℃ 时间:2020-04-09 01:36:48
解答
2^n+1 + 3^n+1/2^n+3^n 分子分母分别除以3^n,得:
[2×(2/3)^n+3]/[(2/3)^n+1],当n趋向于无穷大时,这个值趋向于3.
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