lim-∞ (2x-1/2x+4)^x 求过程和答案

lim(x)lim(x→∞) [(x-1)/(x+1)]^2x 为什么 lim(x->∞) {[(-2)/(x+1)]*2x} = -4 lim x→∞(2x+1)/(3x-4) Lim [x^2/(x^2-1)]^x (x→∞) lim(1+x/x)2x (x→∞) lim(1-x)^(2/x) x->0 lim(x→∞)(4x^3+2x-1)/(2x^3-3x+1) 求lim(x->∞):[√(4x^2+x-1)+x+1]/[√(x^2+sinx)] lim(x→∞)(x^2+x)/(x^4-3x-1)的极限 1.lim x->∞ （2x/x^2+1)*cosx 2..lim x->∞{ [(x^2-x)arctanx]/x^3-x-5}3..lim x->0 （e^x-e^-x-2x)/(x-sinx) 4..lim x->0 (sinx-x)/(x^3) 5..lim x->0 (x^2*tanx)/(x-tanx) 6..lim x->0 (1+3/x)^2x 7..lim x->0 (1+2x)^(3/sinx) 8.lim x->∞ (x/1+x)^(x-3) 9..li lim(x+1)^x+1(x+3)^x+3/x^2x+4 x趋于无穷 x/2-1lim(1-2/x)x→∞ lim(x→∞)(1-2/x)^2x lim(x→∞)(1-2/x) (x+1)次方 计算 x－∞lim(1+1/x)^2x lim(x→∞)[1+(1/x)]^x/2 lim(x->+∞)x sin2x/x^2+1 lim x→∞ x-1/x^2 lim x→∞(1-2/x)^x=