y=sin(x+3π/4)+cos(x+3π/)的周期和是奇函数还是偶函数?
问题描述:
y=sin(x+3π/4)+cos(x+3π/)的周期和是奇函数还是偶函数?
答
是y=sin(x+3π/4)+cos(x+3π/4)吗?
y=√2sin(x+3π/4+π/4)=√2sin(x+π)=-√2sinx
周期为2π,奇函数