怎样化简这个函数? f(x)=(cosx+sinx)+根号3cos2x-1 要具体步骤,谢谢!!!
回复(1) 2010-02-17 20:22 来自版块 - 
表情
teacherM题目应该为f(x)=(cosx+sinx)^2+√ 3cos2x-1吧? 解答: f(x)=(cosx+sinx)^2+√ 3cos2x-1 =sin2x+ √ 3cos2x = 2sin(2x+ 兀/3)(2010-02-17 20:29)

返回顶部