what is the domain of f for f(x,y) = (x^2y-3y)/x^2+y^2-1 ?

I know that the denominator cannot equal 0, so x^2+y^2 cannot equal 1 but I'm not sure how to express that

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- Oct 29th 2009, 09:07 PMcottekrdomain
what is the domain of f for f(x,y) = (x^2y-3y)/x^2+y^2-1 ?

I know that the denominator cannot equal 0, so x^2+y^2 cannot equal 1 but I'm not sure how to express that - Oct 30th 2009, 06:40 AMAmer