The correct statement the midline of the function, y=-1.
The correct option id (D)
What is triangle wave function?
A triangular wave or triangle wave is a non-sinusoidal waveform named for its triangular shape. It is a periodic, piecewise linear, continuous real function. Triangle wave. A bandlimited triangle wave pictured in the time domain (top) and frequency domain (bottom).
The given function is:
y= 1/2 cos(2x)-1
Now,
The amplitude of the given function is, A= 1/2 = 0.5
The domain of the function is -∞<x<+∞
The period of the function is π.
The midline of the function, y=-1
Thus, the fourth point is correct.
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