化简sin（x+y）-2sinxcosx/2sinxsiny+cos（x+y

化简sin（x+y）-2sinxcosx/2sinxsiny+cos（x+y y=(cos^2x)/(sinxcosx-sin^2x),(0 y=根号2(cos^2x-sin^2x)+2根号2sinxcosx化简 求y=sin^2x+2sinxcosx的周期 y=sin^2x+2sinxcosx的值域 y=sin^2x-sinxcosx+1/2的值域 求y=sin^2(x)-sinxcosx+2的值域 求y=sin平方x+2sinxcosx的周期 函数y=sinxcosx-3sin^2(x)的最大值 求y=sinxcosx+sin^2x,0 化简：y=cos＾2x+2sinxcosx-sin＾2x y=2sin^2 x+4sinxcosx+5cos^2 x 化简 y=sin^2x-根号3sinxcosx-cos^2x化简 化简：y=cos^4 x＋2 sinxcosx－sin^4 x y=sin^4x+2√3 sinxcosx-cos^4x 化简 化简sin(2x+π/3)-（根号3）sin²x+sinxcosx+(根号3)/2 f(x)=sin^2x+sinxcosx-1/2,化简 sin²X-sinxcosx+2cos²x=化简