y=2sin(2x+π/3)变到y=2cos(2x)急!
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/29 01:51:12
![y=2sin(2x+π/3)变到y=2cos(2x)急!](/uploads/image/z/13574003-59-3.jpg?t=y%3D2sin%EF%BC%882x%2B%CF%80%EF%BC%8F3%EF%BC%89%E5%8F%98%E5%88%B0y%3D2cos%EF%BC%882x%EF%BC%89%E6%80%A5%21)
y=2sin(2x+π/3)变到y=2cos(2x)急!
y=2sin(2x+π/3)变到y=2cos(2x)
急!
y=2sin(2x+π/3)变到y=2cos(2x)急!
将y=2sin(2x+π/3)向右平移π/3得y=2sin2
再将y=2sin2x向左平移π/2得y=2cos2x
2sin(2x+π/3)=2sin2x cos pi/3 +2 cos2x sin pi/3
= sin2x + /3 * cos 2x
你题目绝对有问题。