Question

Fie multimea $A= { \frac{-2}{3} , \sqrt{10} , \sqrt{0,(1)}$ } . Aflati :
A itnersectat (R\Q) , A intersectat R , A intersectat Q , A intersectat N , A intersectat Z

Answer 1

[tex]A\cap (\mathbb{R}-\mathbb{Q}) =\{\sqrt{10}\} \\\;\\ A \cap \ \mathbb{R} =\{ \dfrac{-2}{\ 3},\sqrt{0,(1)}\} \\\;\\ A \cap\ \mathbb{N} = \phi \\\;\\ A \cap\ \mathbb{Z} = \phi \\\;\\ A \cap\ \mathbb{Q} = \{\dfrac{-2}{\ 3}, \ \sqrt{0,(1)}\} [/tex]