求单调区间y=1/2sin(π/4-2X/3) y=-lsin(X+π/4)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/22 03:31:33
![求单调区间y=1/2sin(π/4-2X/3) y=-lsin(X+π/4)](/uploads/image/z/10155264-24-4.jpg?t=%E6%B1%82%E5%8D%95%E8%B0%83%E5%8C%BA%E9%97%B4y%3D1%2F2sin%EF%BC%88%CF%80%2F4-2X%2F3%29+y%3D-lsin%28X%2B%CF%80%2F4%EF%BC%89)
求单调区间y=1/2sin(π/4-2X/3) y=-lsin(X+π/4)
求单调区间y=1/2sin(π/4-2X/3) y=-lsin(X+π/4)
求单调区间y=1/2sin(π/4-2X/3) y=-lsin(X+π/4)
套公式呀.三角函数外面的数字都不影响单调区间.
sinx的增区间是[2kπ-π/2,2kπ+π/2],k∈Z
减区间是[2kπ+π/2,2kπ+3/2π],k∈Z或者减一个2π也行.
2kπ-π/2