Question

4) Represente, na reta real, os intervalos:
a) [2,8]
b) ]−∞, 2]
c) ]1,5[
d) [−6, −1[
e) [0, +∞[
f) {∈R|2<<5}
g) {∈R|−2≤≤2} h) {∈R|≥−1}
i) {∈R|3<≤7}
j) {∈R|<1}

Answer 1

Explicação passo-a-passo:

$a)~~[2,8]\\\\ ----\bullet^2xxxxxxx\bullet^8---\\ \\ b)~~[-\infty,2]\\ \\ xxxxxxxxx\bullet^2----\\ \\ c)~~~]1,5[\\\\ -----\circ^1xxxxxx\circ^5-----\\ \\ d)~~~[-6,-1[\\ \\ -----\bullet^{-6}xxxxxxx\circ^{-1}----\\ \\ e)~~[0,+\infty[\\ \\ -----\bullet^0xxxxxxxxx\\ \\ f)~~~\{x\in R /2<x<5\}\\ \\ ------\circ^2xxxxxxxx\circ^5-----\\ \\ g)~~\{x\in R/-2\leq x\leq 2\}\\ \\ -----\bullet^{-2}xxxxxxxx\bullet^2----$

$h)~~~\{x\in R/x\geq -1\}\\ \\ ------\bullet^{-1}xxxxxxxxx\\ \\ i)~~\{x\in R3<x\leq 7\}\\ \\ ------\circ^3xxxxxxxxx\bullet^7------\\ \\ j)~~\{x\in R/x<1\}\\ \\ xxxxxxxxxxx\circ^1-------$