问题
填空题
函数y=cos2(x-
|
答案
y=
[1+cos2(x-1 2
]+π 12
[1-cos2(x+1 2
]-1=π 12
[cos(2x-1 2
)-cos(2x+π 6
)]=sinπ 6
•sinx=π 6
sinx.T=π.1 2
故答案为:π.
函数y=cos2(x-
|
y=
[1+cos2(x-1 2
]+π 12
[1-cos2(x+1 2
]-1=π 12
[cos(2x-1 2
)-cos(2x+π 6
)]=sinπ 6
•sinx=π 6
sinx.T=π.1 2
故答案为:π.