求lim x趋向于0（sin2x)/x?

lim(sin2x)/(x^3+3x) x趋向于0 求lim x趋向于0时sin2x/3x答案 lim sin2x/3x x趋向0 X趋向于0,求(SIN2X)/(SIN5X)的极限 求lim x趋向于0(arctanx)/(x^2+1) 求lim x趋向于0(x-sinx)/tanx^3 lim(x趋向于0+）x^tanx 求极限? 例如：lim x趋向于0,则sin2x/sin3x的多少? lim(x趋向π）sin2x/tan3x x趋向于0,求极限lim((tankx)/(xsinx)) 1-√cosx/xsinx 求Lim X趋向于0 求极限!lim sinax/sinbx 其中x趋向于0