Question

repede va rog dau coroana​

Answer 1

$\displaystyle -2<x\leq4\Rightarrow x\in\{-1, 0, 1, 2, 3, 4\}\Rightarrow A = \{-1, 0, 1, 2, 3, 4\}\\|x|<3\Rightarrow -3<x<3\Rightarrow x\in\{-2, -1, 0, 1, 2\} \Rightarrow B = \{-2, -1, 0, 1, 2\}$

$\displaystyle A\cup B = \{-2, -1, 0, 1,2,3,4\}\\A \cap B = \{-1, 0, 1, 2\}\\A \backslash B = \{3, 4\}\\B\backslash A = \{-2\}$