lim( (2x+3)/(2x+1) )^(x+1) x趋于无穷大的极限我查到过程lim( (2x+3)/(2x+1) )^(x+1)=lim(1+ 2/(2x+1) )^(x+1)=e 第一步到第二步我理解,但是第二步怎么就直接得出等于e了?即如何凑成(1+1/N)^N的形式?
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