函数y=sin(3x+π/4)+2cos(3x+π/4)的最小正周期是

求函数y=cos(9/2π+x)+sin^2x的最大值和最小值还有一题 已知sinx+cosx=1/2,求sin^3x+cos^3x和sin^4x+cos^2x 函数y=sin(2x+α)cos(x+α)-cos(2x+α)sin(x+α)在x=π/3处的导函数为 函数y=sin(x)cos(x+ π/4)+cos(x)sin(x+π/4)的最小正周期是 函数y=cos^2(3x+π/6)-sin^2(3x+π/6)化简 函数y=cos(2x+3π)·sin(2x-π)的周期为 函数y=cos(x+π/2）+sin（π/3-x)化简 函数y=2sin(x-π/6)+cos(x+π/3)的一条对成轴是 函数y=(3+sin x)/(4+2cos x)的值域是? 求函数y=7-4sin(x)cos(x)+4cos^2(x)-4cos^4(x)值 函数y=sin(3x+π/4)+2cos(3x+π/4)的最小正周期是 求函数y=2sin(2π/3+4x)+cos(π/6+4x)单调区间 求函数y=2sin(2π/3+4x)+cos(π/6+4x)单调区间 函数y=cos(2x-3π/4)-2根号2sin^2x的最小正周期为 函数y=cos^4x-sin^4x的最小正周期y=(cos^2x+sin^2x)(cos^2x-sin^2x)为什么等于cos^2x-sin^2x=cos2x谢谢 函数Y=sin(2x+π/3)cos(x-π/6)-cos(2x+π/3)sin(x-π/6)的图像的一条对称轴方程是多少 函数y=cos^2X-sin^2x最小值 已知函数f(x) =√3cos(2x-y)-sin(2x-y) (0 函数y=cos(2x-π/4)怎样化成sin形式