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P.S. In the response provided earlier, 4 is the peak to peak amplitude. the peak amplitude is 2.
The function `y= 2*cos(3x+pi/4) - 5`
If the graph of the function is plotted, the following is obtained:
The amplitude of the function is 4. It is shifted below the x-axis by 5. The period of the function is `2*pi/3` and the phase shift is `pi/4` .
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