Jawab:
nilai mutlak
Penjelasan dengan langkah-langkah:
|x - 1| + |x + 2| - |9 - 3x| untuk nilai nilai berikut.
a. x < -2
( x- 1) < 0 , ( x+ 2) < 0 , (9- 3x) > 0
maka :
= - ( x - 1) + ( - (x + 2)) - (+ (9 - 3x))
= - x + 1 - x - 2 -9 + 3x
= - x - x + 3x + 1 - 2 - 9
= x - 10
b. -2 < x < 1
(x - 1) < 0 , ( x + 2)> 0 , (9 - 3x) > 0
maka
= -( x- 1) + ( +(x + 2)) - (+(9- 3x))
= - x + 1 + x + 2 - 9 + 3x
= - x + x + 3x + 1 + 2 - 9
= 3x - 6
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Jawab:
nilai mutlak
Penjelasan dengan langkah-langkah:
|x - 1| + |x + 2| - |9 - 3x| untuk nilai nilai berikut.
a. x < -2
( x- 1) < 0 , ( x+ 2) < 0 , (9- 3x) > 0
maka :
= - ( x - 1) + ( - (x + 2)) - (+ (9 - 3x))
= - x + 1 - x - 2 -9 + 3x
= - x - x + 3x + 1 - 2 - 9
= x - 10
b. -2 < x < 1
(x - 1) < 0 , ( x + 2)> 0 , (9 - 3x) > 0
maka
= -( x- 1) + ( +(x + 2)) - (+(9- 3x))
= - x + 1 + x + 2 - 9 + 3x
= - x + x + 3x + 1 + 2 - 9
= 3x - 6