求证：tan5x+tan3xcos2x•cos4x＝4(tan5x−tan3x)

求两道极限题的解法lim(x^6-1)/(x^10-1)x→1lim(tan3x)/(tan5x)x→0答案都是3/5, 求X趋向0时,sin3X/tan5x的极限 计算极限 lim x→0 tan5x/x lim x→0(tan2x/tan5x)的极限怎么求? 洛必达法则求limx趋于丌,sin3x/tan5x的极限 lim sin3x/tan5x在x->pai时的极限 求极限limx趋于0(ln(1+2x))/tan5x lim(x→∏) tan5x/sin3x = lim(x→∏) 5x•tan5x/5x / 3x ̶ lim(x趋于π（派）) sin3x/tan5x.lim(x趋于π/4（4分之派）) sinx-cosx/1-cos^x 用洛必达法则求当x→π时(sin3x)/(tan5x)的极限 当x趋向于0时,求(sin3x)\(tan5x)的极限 用洛必达法则求极限lim(X-π)sin3X除以tan5x请求写出详细求解过程谢谢