求(x→0)lim(sin2x/sin5x)的极限,

求lim(x→0) (x+sin2x)/(x-sin2x) 求极限 lim(sin2x/sin3x)x->0x→0 求lim(n→0)[sin2x/x-xsin(2/x)] lim x-0 sin2x/x 求极限 lim sin2x/tan3x 求极限?(x→0) 求(x→0)lim(sin2x/sin5x)的极限, lim sin2x／sin5x (x→0),求详细过程 lim（ x→0）sin2x / tan3x sin2x lim ------- x→0 tan3x 求极限 lim x→π/2 (sin2x)^3 lim x→0 根号(1+x^2)-1/x 求lim x趋向于0（sin2x)/x? 求极限 lim(x→0){x[sin(1/x^2)-1/sin2x]} 请问高手求极限lim(x→0)e^x-e^(-x)/sin2x 求极限lim(x→0){(2x-sin2x)/xsin^2x} 求下列极限值1.Lim sin2x∕3x x→02.Lim tan5x∕xx→0 求(x→∞)lim(sin2x/sin5x)的极限, 求极限,lim（x一>0）sin2x/sin3x 求极限lim [根号(4+x)-2]/sin2x n->0