Question

Exercițiul 3
Am nevoie urgent
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Answer 1

Vezi rezolvarea in atasament

Answer 2

$C=\{-3,\ \ 1 \},\ \ |x|\leq2\Rightarrow -2\leq x\leq2\stackrel{x\in\mathbb{Z}^*}{\Longrightarrow}\ D=\{-2,\ -1,\ 1,\ 2\}\\ \\ C\times D=\{(-3,\ -2)\};(-3,\ -1);(-3,\ 1); (-3\ 2);(1,-2);(1,-1);(1,\ 1);(1, 2)\}\\ \\ D\times C=\{(-2,\ -3)\};(-2,\ 1);(-1,\ -3); (-1\ 1);(1,-3);(1,1);(2,\ -3);(2, 1)\}$