- #1
says
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Homework Statement
Find the domain of the function: f(x,y) = xy*√(x2+y)
Homework Equations
The domain is the set of all input values for which the function is defined.
The Attempt at a Solution
D = {(x,y): xy>0}
I plugged the function into Wolfram and it gave the result:
D = {(x,y): x2+y ≥ 0 }
I can see how that solution is correct, but isn't mine as well? I'm saying that the product of x and y is greater than 0, which implies neither x nor y = 0, hence the > symbol.
The wolfram solution seems a little less explicit to me.