Question

[Kimian Hajan Ruventaren]

Cho \(A=\left\{x\in R:-5\le x< 7\right\}\), \(B=\left\{x\in R:x\ge0\right\}\), \(C=\left(6;15\right)\). XÁc định \(C_R\left(A\cap B\cap C\right)\)

Answer 1

[Nguyễn Việt Lâm]

\(A\cap B=[0;7)\)

\(\Rightarrow A\cap B\cap C=\left(6;7\right)\)

\(\Rightarrow C_R\left(A\cap B\cap C\right)=(-\infty;6]\cup[7;+\infty)\)