Question

Find the union, AU B, for of the following pair of sets. Enter "DNE" for the empty set.A = [6, ∞), B = (8,00)

Answer 1

`\begin{gathered} A=[6,\infty) \\ B=(8,\infty) \\ A\cup B=? \end{gathered}`
`\begin{gathered} A=\lbrace6,7,8,9,10,...\rbrace \\ B=\lbrace9,10,...\rbrace \\ A\cup B=\lbrace6,7,8,9,10,...\rbrace \\ A\cup B=[6,\infty) \end{gathered}`