lim x→∞(1-2/x)^x=

lim(x)lim(x→∞) [(x-1)/(x+1)]^2x 为什么 lim(x->∞) {[(-2)/(x+1)]*2x} = -4 lim x→∞(1-2/x)^x= Lim [x^2/(x^2-1)]^x (x→∞) lim(1+x/x)2x (x→∞) lim(x→∞)[(X^2+2x+5)/(3x^2-x+1) = 求极限 lim [(3+x)/(6+x)]^[(x-1)/2]= x→∞求极限 lim [(3+x)/(6+x)]^[(x-1)/2]=x→∞ f(x)=(2+e^x)/1+e^2x)+ | x|sin1/x求 1)lim[x→+∞]f(x); 2)lim[x→-∞]f(x); 3)lim[x→∞]f(x) x/2-1lim(1-2/x)x→∞ lim(x→∞)(1-2/x) (x+1)次方 lim(x→∞)[1+(1/x)]^x/2 lim(x→∞)(1-2/x)^2x x→+∞,lim（1+a/x)^x=? lim x→∞(2x+1)/(3x-4) lim x→∞ x-1/x^2 求lim(√x^2+1)-x x→-∞ lim（x→0）=(1/x^2-cot^2x)lim(x→∞)=[(2+x)e^(1/x)-x] Lim(x→∞)((2x-3k)/2x)-2x= Lim(x→∞)xsin3/x, 求lim(x→0)x cos 1/x lim(x→∞)x^2/ (3x-1)的极限