lim(x→+∞)([(x+1)(x+2)]^0.5 -x)的极限

Lim [x^2/(x^2-1)]^x (x→∞) lim(1+x/x)2x (x→∞) lim(x)lim(x→∞) [(x-1)/(x+1)]^2x 为什么 lim(x->∞) {[(-2)/(x+1)]*2x} = -4 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 lim x→∞(2x+1)/(3x-4) lim x→∞ x-1/x^2 lim x→∞(1-2/x)^x= 求lim(√x^2+1)-x x→-∞ 求lim(x→0)x cos 1/x lim(x→∞)x^2/ (3x-1)的极限 lim xsin(2/x) x→∞ 求极限lim x→∞ (x/(1+x))^x lim(x→+∞)(x+e^x)^(1/x) lim（ x→∞）（1+x / x)^3x lim x→1 x-1/x^2-x lim(x→0)e^x-x-1/x^2