lim x→1 (x^2-4x+3)/(x^4-4x^2+3)

lim x→∞(2x+1)/(3x-4) lim x→1 (x^2-4x+3)/(x^4-4x^2+3) lim(x→∞)(4x^3+2x-1)/(2x^3-3x+1) lim(x→∞)(x^2+x)/(x^4-3x-1)的极限 帮忙`````````一些求极限的数学题一.求极限1.lim 3x^+2x+1x→12.lim x^+3x+2/x的三次方+4x^+5x→03.lim x^-1/x-1x→14.lim x^-3x+2/1-x^x→15.lim sin2x/5xx→06.lim sin3x/tan2xx→07.lim (1+x)的x分之2次方x→08.lim （1+2/n)的n次 f(X)是关于X的一个三次多项式.已知lim[f(x)/(x-2)]=lim[f(x)/(x-4)]=1x→2 x→4 求lim[f(x)/(x-3)]=?x→4 lim(x+1)^x+1(x+3)^x+3/x^2x+4 x趋于无穷 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 lim(x)lim(x→∞) [(x-1)/(x+1)]^2x 为什么 lim(x->∞) {[(-2)/(x+1)]*2x} = -4 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)(a^2x-1)/4x lim(x→0)2x^3-x+1 lim(x->2) {(3x+16)^1/2-4}/x 求 lim(x→1)sin(x+1)/x+1 求 lim(x→2)x²-4/x-2 求lim(x→0)x cos 1/x lim(x→∞)x^2/ (3x-1)的极限 lim(x→1)(x^3-3x+2)/(x^3-x^2-x+1) lim(x→1)[(x^(3x-2)-x)sin2(x-1)]/(x-1)^3 lim (x^3-x^2+4x)/(x^2+x) x→ 0