函数y=cos(x+π/2),x∈[π/4,5π/4]的值域为

函数y=cosπ/2x×cosπ/2(x-1)的最小正周期 函数y=cosπ/2x×cosπ/2(x-1)的最小正周期 化简函数y=cos^2(x+7π/12)-cos^2(x+π/12), 函数y=cos^2(π/4-x)-cos^2(π/4+x)的值域是 函数y=cos(3π/2-x)/cos(3π-x)最小正周期是 函数y=cos(3π/2-x)/cos(3π-x)最小正周期是： 函数y=2cos(x-π/3)(π/6 函数Y=COS(π/2-2X)的奇偶性 函数y=2cos(2x-π/6)值域 函数y=cos(2x+φ) (-π 函数y=cos(2x+π/4) 求dy 函数y=3cos(2x-π/3)最小值 函数y=cos(2x+π/4)的对称轴 求函数y=cos(x-π/3),x∈[-π/2,π/2]的值域, 函数y=cos(x+π/3)的值域(其中x∈[-π/2,π/3]) 函数y=cos(x-π/8)(x∈[π/6,2π/3]的最小值. 函数y=cos(x-π/6)(x∈【π/6,2π/3】)的最小值 函数y=cos(x-π/6)(x∈[π/6,2π/3]的最小值.