求lim(x→∞)1-cos2x/xsinx

求lim(x→∞)1-cos2x/xsinx lim(x→0)(1-cos2x)/xsinx 2.5计算极限lim(x→0) (1-cos2x)/xsinx 求lim(x→0)〔1-cos2x+tan^2 X〕/xsinx 用洛必达法则求lim x→ o xsinx分之1 减cos2x lim(x趋向0)(1-cos2x)/xsinx怎么解? lim(x→0）（1-cos2x）／（xsinx)的极限 求极限lim x→0 (1/xsinx+xsin1/x) 求下列极限lim(x→0)(1-cosx)/xsinx lim x→0 1-cosx/xsinx lim(x→0)(1-cos4x)/xsinx 求极限x趋向于0 （1-cos2x)/xsinx