求极限:lim(x→0)(1/x^2)[1-cosx(cos2x)^(1/2)(cos3x)^(1/3)

求lim(1-cos2x)/x^2极限,x→0 求极限lim(x→0) (1-sinx)^(2/x) 求极限 lim(x→0)(1-sinx)^(2/x) 求极限lim Ln(1+x) /x > .< x→0 求lim(x→0)x cos 1/x lim(x→∞)x^2/ (3x-1)的极限 求极限lim(x-->0)x^2 sin(1/x), 求极限lim(x→0)sinxsin(1/x);lim(x→∞)(arctanx/x) 求极限lim(x→0)x²/1-cosx 求极限lim(x→0) cos(1/x) 求极限lim(x→0)(cosx-(1/x)) 求极限lim x→0 (1/xsinx+xsin1/x) lim 2x/tan3x x→0 求极限 求极限lim【1-cosmx)/x^2】,x趋向0 lim x->0(sqrt(sin(1/x^2)) 求极限 lim 1/2x x-->0 求极限 求极限 lim x→π/2 (sin2x)^3 lim x→0 根号(1+x^2)-1/x 求极限lim[x→0] [根号(1+ x )+根号(1-x )-2]/x^2 求极限lim(x→0)[2sinx+x^2(sin1/x)]/ln(1+x)