求极限 n趋向无穷 2^n+1 + 3^n+1/2^n+3^n
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求极限n趋向无穷2^n+1+3^n+1/2^n+3^n求极限n趋向无穷2^n+1+3^n+1/2^n+3^n求极限n趋向无穷2^n+1+3^n+1/2^n+3^n2^n+1+3^n+1/2^n+3^n
求极限 n趋向无穷 2^n+1 + 3^n+1/2^n+3^n
求极限 n趋向无穷 2^n+1 + 3^n+1/2^n+3^n
求极限 n趋向无穷 2^n+1 + 3^n+1/2^n+3^n
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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