求函数y=cos(x+π/3)-sin(x+π/3)的最大值最小值和周期

问题描述:

求函数y=cos(x+π/3)-sin(x+π/3)的最大值最小值和周期

y=cos(x+π/3)+sin(x+π/3)
=根号下2sin(x+π/3+π/4)
=根号下2sin(x+7π/12)
-根号下2