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Intervaly
Zápis intervalu pomocí absolutní hodnoty
K zápisu na levé straně vyber správný zápis intervalu pomocí závorek
Množina
Zápis pomocí intervalu
A = {x∈R; | x | < 2 }
< - 2, 2 >
< - 4, - 2 >
< 2, 4 >
( - 2, 2 )
( 2 ; 6 )
(− 6 ; - 2 )
(−∞; - 2 > ∪ < 2 ; ∞)
(−∞; - 2 > ∪ < 4 ; ∞)
(−∞; - 2 ) ∪ ( 2 ; ∞)
(−∞; - 4 ) ∪ ( 2 ; ∞)
B = {x∈R; | x | ≤ 2 }
< - 2, 2 >
< - 4, - 2 >
< 2, 4 >
( - 2, 2 )
( 2 ; 6 )
(− 6 ; - 2 )
(−∞; - 2 > ∪ < 2 ; ∞)
(−∞; - 2 > ∪ < 4 ; ∞)
(−∞; - 2 ) ∪ ( 2 ; ∞)
(−∞; - 4 ) ∪ ( 2 ; ∞)
C = {x∈R; | x | > 2 }
< - 2, 2 >
< - 4, - 2 >
< 2, 4 >
( - 2, 2 )
( 2 ; 6 )
(− 6 ; - 2 )
(−∞; - 2 > ∪ < 2 ; ∞)
(−∞; - 2 > ∪ < 4 ; ∞)
(−∞; - 2 ) ∪ ( 2 ; ∞)
(−∞; - 4 ) ∪ ( 2 ; ∞)
D = {x∈R; | x | ≥ 2 }
< - 2, 2 >
< - 4, - 2 >
< 2, 4 >
( - 2, 2 )
( 2 ; 6 )
(− 6 ; - 2 )
(−∞; - 2 > ∪ < 2 ; ∞)
(−∞; - 2 > ∪ < 4 ; ∞)
(−∞; - 2 ) ∪ ( 2 ; ∞)
(−∞; - 4 ) ∪ ( 2 ; ∞)
E = {x∈R; | x - 4 | < 2 }
< - 2, 2 >
< - 4, - 2 >
< 2, 4 >
( - 2, 2 )
( 2 ; 6 )
(− 6 ; - 2 )
(−∞; - 2 > ∪ < 2 ; ∞)
(−∞; - 2 > ∪ < 4 ; ∞)
(−∞; - 2 ) ∪ ( 2 ; ∞)
(−∞; - 4 ) ∪ ( 2 ; ∞)
F = {x∈R; | x - 3 | ≤ 1 }
< - 2, 2 >
< - 4, - 2 >
< 2, 4 >
( - 2, 2 )
( 2 ; 6 )
(− 6 ; - 2 )
(−∞; - 2 > ∪ < 2 ; ∞)
(−∞; - 2 > ∪ < 4 ; ∞)
(−∞; - 2 ) ∪ ( 2 ; ∞)
(−∞; - 4 ) ∪ ( 2 ; ∞)
G = {x∈R; | x + 4 | < 2 }
< - 2, 2 >
< - 4, - 2 >
< 2, 4 >
( - 2, 2 )
( 2 ; 6 )
(− 6 ; - 2 )
(−∞; - 2 > ∪ < 2 ; ∞)
(−∞; - 2 > ∪ < 4 ; ∞)
(−∞; - 2 ) ∪ ( 2 ; ∞)
(−∞; - 4 ) ∪ ( 2 ; ∞)
H = {x∈R; | x + 3 | ≤ 1 }
< - 2, 2 >
< - 4, - 2 >
< 2, 4 >
( - 2, 2 )
( 2 ; 6 )
(− 6 ; - 2 )
(−∞; - 2 > ∪ < 2 ; ∞)
(−∞; - 2 > ∪ < 4 ; ∞)
(−∞; - 2 ) ∪ ( 2 ; ∞)
(−∞; - 4 ) ∪ ( 2 ; ∞)
K = {x∈R; | x - 1 | ≥ 3 }
< - 2, 2 >
< - 4, - 2 >
< 2, 4 >
( - 2, 2 )
( 2 ; 6 )
(− 6 ; - 2 )
(−∞; - 2 > ∪ < 2 ; ∞)
(−∞; - 2 > ∪ < 4 ; ∞)
(−∞; - 2 ) ∪ ( 2 ; ∞)
(−∞; - 4 ) ∪ ( 2 ; ∞)
L ={x∈R; | x + 1 | > 3 }
< - 2, 2 >
< - 4, - 2 >
< 2, 4 >
( - 2, 2 )
( 2 ; 6 )
(− 6 ; - 2 )
(−∞; - 2 > ∪ < 2 ; ∞)
(−∞; - 2 > ∪ < 4 ; ∞)
(−∞; - 2 ) ∪ ( 2 ; ∞)
(−∞; - 4 ) ∪ ( 2 ; ∞)
KONTROLA
OK
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