= − 3 = 3 A Period: = 2π = 2π = π T ω 2 − π Phase Shift: φ = 2 = − π ω 2 4 Interval defining one cycle: φ φ π ⎡ , + ⎤ = ⎡− , 3π ⎤ T ω ⎢ω ⎥ ⎢ 4 4 ⎥ ⎣ ⎦ ⎣ ⎦ Subinterval width: = π T 4 4 Key points: π ⎞ ⎛ π ⎞ ⎛ ⎞ ⎛ ⎞ 3π π ⎛ − ,0 (0, , ,3 , ,0 , −3) , ,0 ⎜ 4 ⎟ ⎜ ⎟ ⎜ ⎟ ⎜ ⎟ 4 2 4 ⎝ ⎠ ⎝ ⎠ ⎝ ⎠ ⎝ ⎠
A = − 3 = 3 Period: T = 2π = 2π = π ω 2 − π Phase Shift: φ = 2 = − π ω 2 4 Interval defining one cycle: ⎡ φ , φ + T ⎤ = ⎡− π , 3π ⎤ ⎢ω ω ⎥ ⎢ 4 4 ⎥ ⎣ ⎦ ⎣ ⎦ Subinterval width: T = π 4 4 Key points: ⎞ ⎛ π ⎞ ⎛ π ⎞ ⎛ 3π ⎞ ⎛ − π ,0 , (0, −3) , ,0 , ,3 , ,0 ⎜ 4 ⎟ ⎜ 4 ⎟ ⎜ 2 ⎟ ⎜ 4 ⎟ ⎝ ⎠ ⎝ ⎠ ⎝ ⎠ ⎝ ⎠