f(x)=2√3sinwxcoswx-2cos^2wx+1
=√3sin2wx-cos2wx
=2(√3/2sin2wx-1/2cos2wx)
=2sin(2wx-π/6)
f(x)的周期T=π,
∴2π/(2w)=π,w=1
f(x)=2sin(2x-π/6)
列表:
x 0 π/12 π/3 7π/12 5π/6 π
2x-π/6 -π/6 0 π/2 π 3π/2 11π/6
y -1 0 2 0 -2 -1
f(x)=2√3sinwxcoswx-2cos^2wx+1
=√3sin2wx-cos2wx
=2(√3/2sin2wx-1/2cos2wx)
=2sin(2wx-π/6)
f(x)的周期T=π,
∴2π/(2w)=π,w=1
f(x)=2sin(2x-π/6)
列表:
x 0 π/12 π/3 7π/12 5π/6 π
2x-π/6 -π/6 0 π/2 π 3π/2 11π/6
y -1 0 2 0 -2 -1