f(x)=sin(wx+pi/6)+根号3cos(wx+pi/6)
=2sin(wx+π/2)
=2coswx
1. 函数y=f(x)图象的两相邻对称轴间的距离为Pi/2
则周期T=2π/w=2*π/2
解得w=2
所以f(x)=2cos2x
2. 依题意y=g(x)=2cos(8x+π/6)
单减区间8x+π/6∈[2kπ+π/2, 2kπ+3π/2]
x∈[kπ/4+π/24, kπ/4+π/6]
f(x)=sin(wx+pi/6)+根号3cos(wx+pi/6)
=2sin(wx+π/2)
=2coswx
1. 函数y=f(x)图象的两相邻对称轴间的距离为Pi/2
则周期T=2π/w=2*π/2
解得w=2
所以f(x)=2cos2x
2. 依题意y=g(x)=2cos(8x+π/6)
单减区间8x+π/6∈[2kπ+π/2, 2kπ+3π/2]
x∈[kπ/4+π/24, kπ/4+π/6]