Question

1.Se considera multimea A={-3\5;√36;15\3;6,1;3√2;1\3;√1;√2} Scrieti elementele multimilor: A∩N={...................} A∩Q={................} A∩Z={.............} A∩(R-Q)={..............}.

Answer 1

   
[tex]\displaystyle 1) \\ A=\left\{ - \frac{3}{5};~ \sqrt{36};~ \frac{15}{3};~6,1;~3 \sqrt{2};~ \frac{1}{3} ;~ \sqrt{1};~\sqrt{2} \right\} \\ \\ \\ A=\left\{ - \frac{3}{5};~ 6;~ 5;~6,1;~3 \sqrt{2};~ \frac{1}{3} ;~ 1;~\sqrt{2} \right\} \\ \\ \\ A \bigcap Z = \{6;~5;~1\} \\ \\ \\ A\bigcap(R-Q)= \{3 \sqrt{2};~\sqrt{2} \}[/tex]