求y=cos(π/6-3x)
求函数y=cosx+cos(x-π3
y =(cos^2) x - sin (3^x),求y'
求函数y = sin(x+π/6)-cos(x+π/3) 的最大值和最小值
求y=sin(2x+π/3)+cos(2x-π/6)的单调区间
函数y=sin(x+π除3)cos(π除6-x)求周期,最大值
求值域y=2sinx+cos^2x,x∈[π/6,2π/3)
Sin x-sin y=2/3 cos x-cos y=1/2 求cos(x-y)
y=cos(x-π/3) y=cos(x-π/3) 求这两个三角函数的奇偶性
求函数y=sin^4x+cos^4x,x(0,π/6)的最小值
函数y=cos(x-π3
求下列函数导数y=cos(π/3-x)y=e^3xy=In(3-x)y=cos^3(1-2x)
求下列Y的导数(1) y=xsin2x+cos3x (2)y=cos(-2x+π/6) (3)Y=2^(2x+1)