: .
:
.
, - . , , , ..
, . .
x X, x ∈ (∈ ).
, ⊂ (⊂ ).
: .
(=), .
, ={1,2,3,4}, B={3,1,4,2} =.
() ∪ , .
, ={1,2,4}, B={3,4,5,6}, ∪ B = {1,2,3,4,5,6}
() ∩ , , .
, ={1,2,4}, B={3,4,5,2}, ∩ = {2,4}
, , .
, ={1,2,3,4}, B={3,4,5}, = {1,2}
Δ , , Δ = () ∪ ().
, ={1,2,3,4}, B={3,4,5,6}, Δ = {1,2} ∪ {5,6} = {1,2,5,6}
:
:
A ∪ B = B ∪ A
A ∩ B = B ∩ A
:
(A ∪ B) ∪ C = A ∪ (B ∪ C)
(A ∩ B) ∩ C = A ∩ (B ∩ C)
(-) , , .
: . : , , . 38 . 21 , , , . 13 , . ?
: 3 , , . :
, , , :
|
|
|
21 3 6 1 = 11 .
13 3 1 2 = 7 .
:
38 (11 + 3 + 1 + 6 + 2 + 7) = 8 .
, 8 + 2 + 1 + 6 = 17 .
. 17 .
1. 1) ∩, U, /, /, :
) ={, , , } ={, }
) ={: -3<<4} ={: 0≤≤6}
) ={2n+1}, B={n+1} nN
2) ∩, U, /, /, :
) ={12, 13, 14, 15} ={12, 14, 16}
) ={: 0<<2} ={: 1≤≤4}
) ={3-(n+1)}, B={n+5} nN
2. 1) 1 200 , 106 , 60 , 92 . 24 , 36 , 30 , 14 . . :
) ?
) ?
) ?
) , ?
2) 1 200 , 106 , 60 , 92 . 24 , 36 , 30 , 14 . . :
) ?
) ?
) , ?
) ?
