The problem states:
A function f(x,y) is defined on the disc Q: x^2+y^2<=1 and equals 1 on it. The domain of f is D(f)=Q and f(x,y)=1 on Q.
The graph of the function is made of steel and hangs in the air. There is a flower at the origin and a few bees are in the air. There current positions are listed below.
Hint: If the bee is at the height z>1, where should is be in order not to see the flower?
Which of these bees can see the flower?
Not sure what this problem is asking, or how to start.