lim(x→0) (x^2+1)/(3x^2-x-1) =

lim(x→0)2x^3-x+1 求lim(x→0)x cos 1/x lim(x→∞)x^2/ (3x-1)的极限 lim(x→0)e^x-x-1/x^2 lim(x->0)((2-x)/(3-x))^1/x 1.lim x→0 3x/(sinx-x)2.lim x→0 (1-cosmx)/x^23.lim x→0 sin4x/[(√x+2)-√2]4.lim h →0 [sin(x+h)-sin(x-h)]/h lim(1-x)^(2/x) x->0 lim(x→0)[(1+X)(1+2X)(1+3x)-1]/x lim x→0 (x^2+2x-1)/(x^3-2x)的极限是多少 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) 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→0 sin2x/sin5xlim x→0 (1-cos2x)/x²lim x→0 in(1-x/2)^1/xlim x→∞ (1+2/x)^2x+1lim x→0 sin2x/sin5xlim x→0 (1-cos2x)/x²lim x→0 in(1-x/2)^1/xlim x→∞ (1+2/x)^2x+1lim x→3 (x-3)cos1/(x-3)lim x→0 (e^sinx-e^x)/(sinx-x) 求极限 （（sin(x^3+x^2-x)+sin x) /x x→0 已知lim sinx/x=1 求下列极限：1.lim(x→2)(x+2/x-2) 2.lim(x→0)4x^3-2x^2+x^2-2x)3.lim(x→0)tanx-sinx/x^34.lim(x→π)sin3x/x-π5.lim(x→无穷大量）（1-1/2x)^x+2知道答案,求过程!谢谢 求极限 lim x→π/2 (sin2x)^3 lim x→0 根号(1+x^2)-1/x 烦人的数学微积分1、lim(x→0)Sin3x/Sin2x2、lim(x→0)x/3*Sin3x3、lim(x→0)[Xsin(3/x)+(tanx/2x)]4、lim(x→3)Sin(x-3)/(X^2-X-6)5、lim(x→∞)[1+(1/2x)^x6、lim(x→∞)(x+3/x)^x7、lim(x→0)（1-x/2)^1/x+118、求下列函数的间断 lim(x→0)(1-3x)^(3/x) lim(x→0) (3x^2-5x+2), lim(x→0)(1-2x)^1/x 极限?