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Lim[x^2/(x^2-1)]^x(x→∞)

题目详情
Lim [x^2/(x^2-1)]^x (x→∞)
▼优质解答
答案和解析
lim [x^2/(x^2-1)]^x (x→∞)
=lim1/[(1-x^(-2))^x]
=lim1/[(1-1/x)^x*(1+1/x)^x]
=lim1/[(1-1/x)^x]*lim1/[(1+1/x)^x]
=1/lim[(1-1/x)^x]*1/lim[(1+1/x)^x]
=1/e^(-1)*1/e^1
=1