Given the function:
[tex]f(x)=2cos(3x-\frac{5\pi}{6})-2[/tex]
You need to remember that the General Equation of the Cosine Function is:
[tex]y=Acos(B(x+C))+D[/tex]
Where:
- The Amplitude is:
[tex]|A|[/tex]
- The Period is:
[tex]\frac{2\pi}{B}[/tex]
- The horizontal shift is "C".
- The Vertical Shift is "D".
- The midlline is:
[tex]y=D[/tex]
In this case, you can identify that:
[tex]D=-2[/tex]
Therefore, the midline is:
