I have found this question:
Find the horizontal line y=k that divides the area bounded by the curves and in two equal parts.
What I thought:
Get the bounded area.
Divide it by two
and calculate that with line k equaling 18
But, if we calculate
This is because we are going to subtract the same area more than once, right?
The answer is probably something around 3 and 6 then.
I am not sure how to continue.