Questão 776343

Q₁ = {(x,y,0) \(\in \mathbb R^3\) : -1 < x < 0, -1 < y < 0}

Q₁ = {(x,y,0) \(\in \mathbb R^3\) - 1 < x < 0, 0 < y < 1}

Q₁ = {(x,y,0) \(\in \mathbb R^3\) 0 < x <1, -1 < y < 0}

Q₁ ={(x,y,0) \(\in \mathbb R^3\) 0 < x < 1, 0 < y < 1}

Q₁ ={(x,y,0) \(\in \mathbb R^3\) :-1 < x < 1, -1 < y < 1}