Question

Simplifique a expressão
{x/x$\leq$ 2} U [0, + infinito)

Answer 1

$\left\{x\left|\; x\leq 2\right. \right \} \cup \left[\;0,\,+\infty \right )\\ \\ =\left(-\infty,\,2 \;\right ] \cup \left[\;0,\,+\infty \right )\\ \\ =\left(-\infty,\,0 \;\right ) \cup \left[\;0,\,2\, \right ] \cup \left(2,\,+\infty \right )\\ \\ =\left(-\infty,\,+\infty \right )\\ \\ =\mathbb{R}\\ \\ \\ \boxed{\left\{x\left|\; x\leq 2\right. \right \} \cup \left[\;0,\,+\infty \right )=\mathbb{R}}$