One very simple example is $$f(x,y) = x^2 - y^2$$
I know that the domain is $\Bbb{R}^2 $ but I don't know a general way to find it in any equation.
Also I don't know how to find the range of this function. Can someone help me?
2026-03-25 06:11:24.1774419084
How to find the domain and range of a 2 variable function
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