Question

qual o domínio desta função? f (x,y)= raiz x=y-1

Answer 1

Domínio √x +y x+y ≥0 x≥-y. D={ x∈ R/ x≥ -y}.

Answer 2

$f(x,y)=\sqrt{x+y-1} \\ \\ x+y-1 \geq 0=\ \textgreater \ y \geq -x+1$
Dm = {(x,y) ∈ IR²/ y ≥-x + 1}