求极限LIM(X-1)(X-2)(X-3)/(1-2X)的3次方 (X趋向无穷大)

求极限lim(1-2/x+3/x^2)^x lim(1-x)^3/x 求极限~ 求lim(x→0)x cos 1/x lim(x→∞)x^2/ (3x-1)的极限 求极限 lim [(3+x)/(6+x)]^[(x-1)/2]= x→∞求极限 lim [(3+x)/(6+x)]^[(x-1)/2]=x→∞ 求极限lim(x+3)(2+cosx)/(x^2+x) 求极限lim(x-->0)x^2 sin(1/x), 求极限,lim(x趋向于1)(x^2-2x+1)/(x^3-x) 求极限x->0lim(tg^2(2x)/x^3)(1-x/(e^x-1)) 求极限lim(x→∞)(2x/3-x)-(2/3x)求极限lim(x→5)根号(x-1)-2/x-5 求极限lim(x->0) 1/x^3 {[(2+cosx)/3]^x-1}求极限lim(x->0)1/x^3 {[(2+cosx)/3]^x-1} 求lim(1-x/2)^2/x x趋近与0的极限 求lim(1-x)^1/3x x趋近与0的极限 求lim(1-x/2)^2/x x趋近与0的极限 求lim(1-x)^1/3x x趋近与0的极限 求lim(x趋向1）(x^2-3x+2)/（1-x^2)的极限 求极限lim(x->1)(√(x^2+3x)-2)/(1-x^2) lim(2x^2+1/3x-1)•sin1/x. X趋于无穷大,求极限 怎么求lim(2x-1/3x-1)^1/x (x－>∞) 的极限 lim→1 （X^2-3X+2)/(X^2+4X-5) 求极限 求极限lim(x~0)((e^x+e^2x+e^3x)/3)^1/xs