Question

3.1 Represente na reta numérica os intervalos a seguir:

A = [−1,3[
B = ]0, 9[
C = [−5, ∞[

Answer 1

$\Large\boxed{\begin{array}{l}\underline{\rm A\,representac_{\!\!,}\tilde ao\,anexa.}\\\sf A=\{x\in\mathbb{R}/-1\leqslant x<3\}\\\rm B=\{x\in\mathbb{R}/0<x<9\}\\\rm C=\{x\in\mathbb{R}/x\geqslant5\}\end{array}}$