涵数y= √ 3cos^2x+sincosx- √ 3/2的最小正周期是?

涵数y= √ 3cos^2x+sincosx- √ 3/2的最小正周期是? 当cos^2x-cos^2y=√3/2时,求sin(x+y）×sin(x-y) Sin x-sin y=2/3 cos x-cos y=1/2 求cos(x-y) 高数：求y'=cos(x-y)的通解 y =(cos^2) x - sin (3^x),求y' 已知函数f(x) =√3cos(2x-y)-sin(2x-y) (0 证明COS（X+Y）COS（X-Y）=COS^2X-SIN^2Y 证明cos(x+y)cos(x-y)= cos^2(x)-sin^2(y) y=2cos x (sin x+cos x) 【高中数学】已知cos(x+y)=1/3,cos(x-y)=2/3,且0 已知cos(x+y)=1/3,cos(x-y)+2/3,且0 化简y=sin^2(x)+2sin(x)cos(x)+3cos^2(x) 隐函数,y=e的x+y次幂怎么求导y=e^x+y x^3+y^3+cos(x+y)=0ln根号下x^2+y^2 -arctany/x=2xcosy=sin(x+y)cos(x^2y)=x这五道题怎么求导，都是高数中的隐函数求导。y'=y/1-yy'=3x^2-sin(x+y)/sin(x+y)-3y^2y'=y+x/x-yy'=cosy-cos(x+y)/cos 已知函数y=sin平方 x+2sinxcosx+3cos平方x ,x属于R.问1、函 数最小正周期是什么?f(x)=sin²x＋2sinxcos＋3cos²x =2sinccosx＋2cos²x＋1,sin平方x+3cos平方x是怎么得出2cos平方x+1的? 数y=1/2sin2x+cos²x,x∈R的值域是什么? 高数复合求导1.y=e^2x+12.y=根号e^x+x^23.y=sin ln x4.y=cos(3x-5)+根号2x-15y=e^-x cos3x y=2^sinx + cos√x 求y’ y=cos(π/3-x)cos[π/2（x-1)]判断奇偶性y=cos(π/3-x)cos(π/3+x)判断奇偶性