Question

Bài 4: Tìm  A giao B ; A hợp B ; A\ B ;B \ A với  :

a)A=[-2;0]  ,  B = [1;7]                                   b) A=[-4;-2]  ,  B = (3;7]                

c) A=[-3;-2]  ,  B = (1;7)                                 d)A=(-  ;-2],  B = [3 ;+  )

e)A= [3;+ ) ; B = (-1;4)                                 f)A = (1;4)  ;B = (2;6)

Answer 1

a: \(A\cap B=\varnothing\)

\(A\cup B=\left[-2;7\right]\)

A\B=[-2;0]

B\A=[1;7]