lim (1/(xsinx)-1/x^2)x~0

lim(x->0)(2xsinx)/(secx-1) lim (1/(xsinx)-1/x^2)x~0 lim(x~无穷)xsin1/x-1/xsinx lim 1/(sinx)^2-1/xsinx,x趋近无穷大 lim(x趋向0) 1-cos2x/xsinx lim(x→0)(1-cos4x)/xsinx lim(x→0)(1-cos2x)/xsinx lim（x→0) sinx-x(x+1)/xsinx lim(x趋向正无穷)((x+1)^4-x^4-(xsinx)^2)/x^3=? ：lim(xsin1/x+1/xsinx)x趋于0 求极限lim x→0 (1/xsinx+xsin1/x) 求极限Lim(x→0)1/xsinx-1/xtanx 求下列极限lim(x→0)(1-cosx)/xsinx lim(x→0)(1-cosx)/(xsinx)=? lim((1-cos2x)/(xsinx)) 当X-->0时的极限 2.5计算极限lim(x→0) (1-cos2x)/xsinx 1-√cosx/xsinx 求Lim X趋向于0 lim(x趋向0)(1-cos2x)/xsinx怎么解?