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Kunci Jawaban Soal-soal Pilihan 155

⎛ 1 7 ⎞ ⎛ 1 7 ⎞
⎛ 2 − ⎞ 3 ⎜− − ⎟ ⎜− − ⎟
7. a. ⎜ ⎟ c. ⎜ 3 3 ⎟ f. ⎜ 3 3 ⎟ g. (P.Q) = Q . P –1
–1
–1
⎜
⎟
⎝ − 1 2 ⎠ ⎜ ⎜ 1 4 ⎟ ⎟ ⎜ ⎜ 1 4 ⎟ ⎟
⎝ 3 3 ⎠ ⎝ 3 3 ⎠
Latihan 4

1. x = 3 d an y = -2

3. x = -5 dan y =1
5. x = -4 dan y = 1

7 . x = 3 dan y = -1
9 . x = 1, y = -2 dan z = 3

⎛ 2 ⎞ ⎛ 4 11 − 5 ⎞
11. a. ⎜ ⎜ ⎟ c. ( − 3 ) 5 e. ⎜ ⎜ ⎟ ⎟
⎟
⎝ − 3 ⎠ ⎝ − 7 −18 10 ⎠
13. Kualitas A harganya Rp1.000,00
Kualitas B harganya Rp3.000,00

Uji Kemampuan

1 A 11 A 21 D
2 E 12 D 22 D
3 C 13 E 23 E
4 B 14 A 24 D
5 C 15 A 25 B
6 C 16 C
7 B 17 D
8 E 18 C
9 A 19 E
10 B 20 A

KUNCI JAWABAN BAB 2
PROGRAM LINEAR

Latihan 1

⎧ + y2x ≥ 2 ⎧ x2 + y ≤ 12
3
⎪ x2
1 ⎧ ≤ x < 4 ⎪ + y ≥ 2 ⎪
4. a. ⎨ c. ⎨ e. ⎨ 2 x + y ≤ 8
⎩ 1 ≤ y ≤ 3 ⎪ 0 ≤ x ≤ 3 ⎪ x ≥ 0 ; y ≥ 0
⎪ 0 ≤ y ≤ 3 ⎩
⎩