a)
|-3x+2|=1
-3x+2=1 lub -3x+2=-1
-3x=-1 lub -3x=-3
3x=1 lub 3x=3
x=¹/₃ lub x=1
x∈{¹/₃;1}
b)
|4-2x|>6
4-2x>6 lub 4-2x<-6
-2x>2 lub -2x<-10
2x<-2 lub 2x>10
x<-1 lub x>5
x∈(-∞;-1) U (5;+∞)
c)
|3x-4|<2
3x-4<2 i 3x-4>-2
3x<6 i 3x>2
x<2 i x>²/₃
x∈(²/₃;2)
|-3x + 2| = 1
-3x + 2 = 1 ∨ -3x + 2 = -1
x = 1/3 ∨ x = 1
x ∈ {1/3, 1}
|4-2x| > 6
4-2x > 6 ∨ 4 - 2x < -6
x < -1 ∨ x > 5
x ∈ (-oo; -1) U (5; +oo)
|3x-4| < 2
3x - 4 < 2 ∧ 3x - 4 > -2
x < 2 ∧ x > 2/3
x ∈ (2/3; 2)
----------------------------------------------------------------------------------------------------
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Pozdrawiam :)
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a)
|-3x+2|=1
-3x+2=1 lub -3x+2=-1
-3x=-1 lub -3x=-3
3x=1 lub 3x=3
x=¹/₃ lub x=1
x∈{¹/₃;1}
b)
|4-2x|>6
4-2x>6 lub 4-2x<-6
-2x>2 lub -2x<-10
2x<-2 lub 2x>10
x<-1 lub x>5
x∈(-∞;-1) U (5;+∞)
c)
|3x-4|<2
3x-4<2 i 3x-4>-2
3x<6 i 3x>2
x<2 i x>²/₃
x∈(²/₃;2)
a)
|-3x + 2| = 1
-3x + 2 = 1 ∨ -3x + 2 = -1
x = 1/3 ∨ x = 1
x ∈ {1/3, 1}
b)
|4-2x| > 6
4-2x > 6 ∨ 4 - 2x < -6
x < -1 ∨ x > 5
x ∈ (-oo; -1) U (5; +oo)
c)
|3x-4| < 2
3x - 4 < 2 ∧ 3x - 4 > -2
x < 2 ∧ x > 2/3
x ∈ (2/3; 2)
----------------------------------------------------------------------------------------------------
Litterarum radices amarae sunt, fructus iucundiores
Pozdrawiam :)