lim x-无穷 (√3x^2+1)/x+1

lim x-无穷 (√3x^2+1)/x+1 lim(x趋向无穷)-(x+1)+√(x^2+1) lim(x趋向无穷)[1-(2/x)]^3x lim(x+1)^x+1(x+3)^x+3/x^2x+4 x趋于无穷 lim 3次√(x^3-5x^2+1)-x X→无穷 lim x(√(9x^2+1) - 3x ) x趋于正无穷 关于极限1.lim((x^-1) + (x^-4))/((x^-2) - (x^-3)) x-> 正无穷2.lim ((e^x) - (e^-x))/((e^x) + (e^-x)) x-> 负无穷 lim(x+1/x+2)^x=?x趋于无穷 lim(x趋于无穷)(x/1+x)^(x+2)=? 利用无穷小量,计算下列极限x-无穷,lim（2x^3-x-1）x-无穷,lim arctan x/x lim(x趋于无穷时)(2x＋1)/√(x²＋3)＝? 数学极限lim(x→0)((x^3)/(3*x^2-1)) lim(x→+无穷)(√x(x+2)-√(x^2-x+1)) lim(x→1)(tan(x-1))/(x^2-1) lim x趋向无穷 {（2x^3+x)sin (2/x) }/ x^2+1 lim(2^x+3^x+5^x)^(1/x)x-->正无穷 lim(2^x+3^x+5^x)^(1/x)x-->正无穷 1.lim x->0 sinx/ x 2.lim x趋于0 sin2x/3x 3.lim x趋于0 x乘以cot3x 4.lim x->无穷 sinx/2x 5.limx趋于无穷(1+X/X)2x 6.lim x->0(1+X)1/x 7.lim x->无穷(1-1/X)x lim(cos1/√x)^2x(x->无穷) lim(x趋向于无穷)(1+3/x)^(x-3)