n趋向于无穷 lim[1-1/(2n+1)]^n 怎样算
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n趋向于无穷 lim[1-1/(2n+1)]^n 怎样算
n趋向于无穷 lim[1-1/(2n+1)]^n 怎样算
n趋向于无穷 lim[1-1/(2n+1)]^n 怎样算
这属于1^(∞)型.
令底数是f(x),指数是g(x),则凡是1^(∞)型,都可以等价于e^{ [ f(x)-1 ]×g(x) }.
推导过程我就不写了.
所以,原式=e^[ -1/(2n+1)×n ] (n趋向于∞)
=e^(-1/2).
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