f(kx)=2sin(kx-π/3)+1的周期为2π/3
即2π/k=2π/3, k=3
f(kx)=2sin(3x-π/3)+1
令3x-π/3=π/2, x=5π/18
图像关于直线x=5π/18π/3对称
x=5π/18时,f(kx)=3
x=0时,f(kx)=-√3+1,
所以m∈(-√3+1,3)
f(kx)=2sin(kx-π/3)+1的周期为2π/3
即2π/k=2π/3, k=3
f(kx)=2sin(3x-π/3)+1
令3x-π/3=π/2, x=5π/18
图像关于直线x=5π/18π/3对称
x=5π/18时,f(kx)=3
x=0时,f(kx)=-√3+1,
所以m∈(-√3+1,3)