沒過(guò)程胡說(shuō)什么的?
lim(x→∞) [(3 - 2x)/(1 - 2x)]^x
= lim(x→∞) [(2 + (1 - 2x))/(1 - 2x)]^x
= lim(x→∞) [1 + 2/(1 - 2x)]^x
= lim(x→∞) [1 + 2/(1 - 2x)]^[(1 - 2x)/2 • 2x/(1 - 2x)]
= e^lim(x→∞) 2x/(1 - 2x)
= e^lim(x→∞) 2/(1/x - 2)
= e^[2/(0 - 2)]
= e^(- 1)
= 1/e