Q. What is the midline equation ofy=8cos(5πx+23π)−9?y=□
Identify Midline: The midline of a trigonometric function of the form y=Acos(Bx+C)+D or y=Asin(Bx+C)+D is the horizontal line y=D, where D is the vertical shift of the function.
Determine Function Parameters: In the given function y=8cos(5πx+23π)−9, the coefficient A is 8, B is 5π, C is 23π, and the vertical shift D is −9.
Calculate Midline Equation: Therefore, the midline equation of the given function is the horizontal line y=−9.
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