Question

Given the function y=2cos(4∅+5) +1, where is the midline?

Answer 1

y = 1

Explanation:

This is very simple.

The mid-line of a sinusoidal function is the horizontal line that passes through the middle of the extreme values.

The midline of a sinusoid of the form y = a Cos (bx + c) + d is going to be

y = d

The form y = a Cos (bx + c) + d is the transformed of the version y = Cos x. Midline is only affected by a vertical shift, which is d.

Thus, the midline of the equation given y=2 cos (4∅+5) + 1 is y = 1