y=sin(π/3-1/2x) x∈[-2π,2π]的单调递增区间 ,

已知sinx=3/5,x∈(π/2,π),求【sin(x+y)+sin(x-y)】/【cos（x+y）+cos（x-y）】的值 函数y=1/2sin)2x)+sin^2(x),x∈R的值域 判断单调性 y=sin(x-π/6) y=sin(-2x+π/3) sinx=1/3,sin(x+y)=1,求sin（2y+x）=? 已知sinx=1/3,sin(x+y)=1,则sin（2y+x)= siny=1/3,sin(x＋y)=1,求sin(2x＋y) (cosx)^2-(cosy)^2=1/3求sin(x+y)*sin(x-y). y=2sin三分之一x y=4sin(x-π/3) y=sin(2x+π/6) y=3sin(1/2x-π/4) 的周期各是多少, y=sin(x-π/6) 和 y=1/2sin(π/3-2x) 的单增区间, Sin x-sin y=2/3 cos x-cos y=1/2 求cos(x-y) cos(x-y/2)=-1/9,sin(x/2-y)=2/3,π/2 sin^2x+cos^2y=1/2 求3sin^2x+sin^2y的最值 y =(cos^2) x - sin (3^x),求y' sin(x+y)cosx+cos(x+y)sinx=1/3 x∈(3π/2,2π) 求cos(2x+π/4) 高数 求导 1 Y=x+x^x 2 Y=sin(x+y高数求导1 Y=x+x^x2 Y=sin(x+y)的二阶导数3 x+y= e^(xy) y=12sin(2x+π/6)+5sin(π/3-2x)最大值 y=12sin(2x+π/6)+5sin(π/3-2x)的最大值 y=sin(x+π/3)sin(x+π/2)化简