“y=sin(2x+5/2 丌)的图像的对称轴方程”该怎么求?

问题描述:

“y=sin(2x+5/2 丌)的图像的对称轴方程”该怎么求?

y=sin(2x+5/2 丌)=sin(2x+2π+π/2)=sin(2x+π/2)=sin{2(x+π/4))
2(x+π/4)=kπ+π/2
x=kπ/2,k∈Z