SISTEM PERTIDAKSAMAAN - PERTEMUAN 4
NAMA : TUBAGUS ARDIAN MAULANA
KELAS : 01TPLP015
NIM : 201011400661
JAWABAN LATIHAN/TUGAS
1. 2x -4 > 0
2x > 0 + 4
2x > 4
x > 4/2
x > 2
Hp ( x > 2 )
3. 2x + 6 ≤ x + 1
2x + x ≤ 1 – 6
x ≤ -5
Hp ( x ≤ -5 )
5. x2 - 7x + 12 ≤ 0
(x – 3) (x - 4) ≤ 0
x = 3 x = 4
Hp ( 3 ≤ x ≤ 4 )
7. x3 – 2x² -x + 1 ≤ - 1
( x - 1) ( x + 1 ) ( x - 2 ) ≤ 0
x = -1 x = 1 x = 2
Hp ( x ≤ -1 atau 1 ≤ x ≤ 2 )
9. x² - 7x + 12 > 0
( x - 3 ) ( x - 4 ) > 0
x = 3 x = 4
Hp ( 3 > x > 4 )
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