9. Hitung hasil penjumlahan matriks berikut:
A = [1 2] , B = [3 4]
[5 6] [7 8]
Jawab:
A + B = [1+3 2+4] = [4 6]
[5+7 6+8] [12 14]
10. Tentukan produk dalam matriks berikut:
A = [2 4]
[6 8]
B = [1 3]
[5 7]
Jawab:
A x B = [2×1+4×5 2×3+4×7] = [22 34]
[6×1+8×5 6×3+8×7] [38 62]
11. Hitung hasil perkalian matriks berikut:
A = [1 3] , B = [2 4]
[5 7] [6 8]
Jawab:
A x B = [1×2+3×6 1×4+3×8] = [20 26]
[5×2+7×6 5×4+7×8] [44 58]