191问答库 > 请问图中39题～47题，怎么做？要具体步骤，谢谢

请问图中39题～47题，怎么做？要具体步骤，谢谢

2025-03-15 08:06:39
推荐回答（1个）
回答1：

39，=(1-1)/2=0
40，n/sqrt(n^2+n)41，=n*ln[1+2/n]=ln[1+2/n]^n=e^2
42，
43，洛必达法则，=1/(a^nlna)=0
46，=[1+2/(2x+1)]^(x+1)=[1+1/x]^(x+1)=e
47，=[lg100]^(1/2)=2*1/2=1

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