
Uji Pemahaman Operasi Matriks

Quiz
•
Mathematics
•
10th Grade
•
Hard
Melda Aini
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apa hasil dari penjumlahan matriks A = [[1, 2], [3, 4]] dan B = [[5, 6], [7, 8]]?
[[6, 8], [10, 12]]
[[5, 6], [7, 8]]
[[1, 2, 3], [4, 5, 6]]
[[6, 7], [8, 9]]
Answer explanation
Penjumlahan matriks dilakukan dengan menjumlahkan elemen yang bersesuaian. Untuk A dan B, hasilnya adalah [[1+5, 2+6], [3+7, 4+8]] = [[6, 8], [10, 12]]. Jadi, pilihan yang benar adalah [[6, 8], [10, 12]].
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hitung hasil dari pengurangan matriks C = [[9, 8], [7, 6]] dan D = [[1, 2], [3, 4]].
[[9, 6], [4, 2]]
[[10, 8], [7, 6]]
[[8, 6], [4, 2]]
[[8, 8], [7, 4]]
Answer explanation
Pengurangan matriks dilakukan dengan mengurangkan elemen yang bersesuaian. C - D = [[9-1, 8-2], [7-3, 6-4]] = [[8, 6], [4, 2]]. Jadi, jawaban yang benar adalah [[8, 6], [4, 2]].
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika E = [[2, 3], [4, 5]] dan F = [[1, 1], [1, 1]], berapa hasil dari E x F?
[[6, 6], [8, 8]]
[[4, 4], [10, 10]]
[[5, 5], [9, 9]]
[[3, 3], [7, 7]]
Answer explanation
Untuk menghitung E x F, kita kalikan baris E dengan kolom F. Hasilnya adalah: [[2*1 + 3*1, 2*1 + 3*1], [4*1 + 5*1, 4*1 + 5*1]] = [[5, 5], [9, 9]]. Jadi, jawaban yang benar adalah [[5, 5], [9, 9]].
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tentukan hasil dari transpos matriks G = [[1, 2, 3], [4, 5, 6]].
[[1, 4], [2, 5], [3, 6]]
[[1, 2], [3, 4]]
[[4, 5, 6], [1, 2, 3]]
[[1, 2, 3, 4], [5, 6, 7, 8]]
Answer explanation
Transpos matriks G mengubah baris menjadi kolom. Baris pertama [1, 2, 3] menjadi kolom pertama [1, 4], dan seterusnya. Hasil transpos adalah [[1, 4], [2, 5], [3, 6]], yang merupakan pilihan yang benar.
5.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Hitung determinan dari matriks H = [[1, 2], [3, 4]].
0
2
-2
-1
Answer explanation
Untuk menghitung determinan matriks H = [[1, 2], [3, 4]], gunakan rumus det(H) = (1*4) - (2*3) = 4 - 6 = -2. Jadi, jawaban yang benar adalah -2.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika I = [[2, 0], [0, 2]], apa invers dari matriks I?
[[1, 1], [1, 1]]
[[0.5, 0], [0, 0.5]]
[[2, 0], [0, 2]]
[[1, 0], [0, 1]]
Answer explanation
Invers dari matriks I = [[2, 0], [0, 2]] adalah matriks yang jika dikalikan dengan I menghasilkan matriks identitas. Matriks identitas 2x2 adalah [[1, 0], [0, 1]], sehingga pilihan yang benar adalah [[1, 0], [0, 1]].
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berapa hasil dari penjumlahan matriks J = [[1, 1], [1, 1]] dan K = [[2, 2], [2, 2]]?
[[1, 1], [1, 1]]
[[2, 3], [2, 3]]
[[4, 4], [4, 4]]
[[3, 3], [3, 3]]
Answer explanation
Penjumlahan matriks dilakukan dengan menjumlahkan elemen yang bersesuaian. Jadi, J + K = [[1+2, 1+2], [1+2, 1+2]] = [[3, 3], [3, 3]]. Pilihan yang benar adalah [[3, 3], [3, 3]].
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