ArianaBeautyMiss
x ----- > 2 x + 1 Cara :::: x > 2 ( x + 1 ) x > 2x + 2 x - 2x > 2 -x > 2 x < 2 Catatan : Variabel tidak boleh negatif.. kalau negatif diubah ke variabel positif,dan lambangnya dirubah.
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arsetpopeye
X/(x + 1) > 2 x/(x + 1) - 2 > 0 (x - 2(x + 1)) / (x + 1) > 0 (x - 2x - 2) / (x + 1) > 0 (-x - 2) / (x + 1) > 0 -(x + 2) / (x + 1) > 0 x = -2 atau x = -1 Garis bilangan --- (-2) +++ (-1) --- -2 < x < -1 HP = {x | -2 < x < -1, x € R}
----- > 2
x + 1
Cara ::::
x > 2 ( x + 1 )
x > 2x + 2
x - 2x > 2
-x > 2
x < 2
Catatan :
Variabel tidak boleh negatif..
kalau negatif diubah ke variabel positif,dan lambangnya dirubah.
x/(x + 1) - 2 > 0
(x - 2(x + 1)) / (x + 1) > 0
(x - 2x - 2) / (x + 1) > 0
(-x - 2) / (x + 1) > 0
-(x + 2) / (x + 1) > 0
x = -2 atau x = -1
Garis bilangan
--- (-2) +++ (-1) ---
-2 < x < -1
HP = {x | -2 < x < -1, x € R}