Question

What is the domain and range of `f(x,y)=2/(x-y^2)`?

Answer 1

Not really sure how to determine the values of x and y where the function is actually defined. Graph shown in the hope that it helps.

Explanation:

You can see from the plot that there is great many values of x and y where the equation is undefined. Thus the trick is to identify those where this is not the case.