Xử nốt câu cuối, hôm qua bận quá
a) $ \\ A \cap B = [1;4] \\ A \cup B = [-4;7] \\ A \setminus B = [-4;1) \\ B \setminus A = (4;7] $
b) $ \\ A \cap B = \varnothing \\ A \cup B = [-4;-2] \cup (3;7] \\ A \setminus B = [-4;-2] \\ B \setminus A = (3;7] $
c) $ \\ A \cap B = \varnothing \\ A \cup B = [-4;-2] \cup (3;7) \\ A \setminus B = [-4;-2] \\ B \setminus A = (3;7) $
d) $ \\ A \cap B = \varnothing \\ A \cup B = (-\infty ;-2] \cup [3;+\infty ) \\ A \setminus B = (-\infty ;-2] \\ B \setminus A = [3;+\infty ) $
e) $ \\ A \cap B = [3;4) \\ A \cup B = (0;+\infty) \\ A \setminus B = [4;+\infty) \\ B \setminus A = (0;3) $
f) $ \\ A \cap B = (2;4) \\ A \cup B = (1;6) \\ A \setminus B = (1;2) \\ B \setminus A = (4;6) $