Soal Simulasi Ujian IPS Kelas 12
Tahun 2018Soal Pilihan Ganda
3. Diketahui Matriks :
Jika AT yakni transpose matriks A, nilai 2a-b yang memenuhi persamaan 2AT - B = C D yakni ...
A. -8
B. -6
C. -4
D. 4
E. 6
Jawaban : C
AT = transpose matriks A
persamaan 2AT - B = C D
Berdasarkan persamaan di atas,
2 - a = 5
a = 2 - 5
a = -3
8 - b = 10
b = 8 - 10
b = -2
Nilai 2a-b ?
= 2 . -3 - (-2)
= -6 +2
= -4
AT = transpose matriks A
2 - a = 5
a = 2 - 5
a = -3
8 - b = 10
b = 8 - 10
b = -2
Nilai 2a-b ?
= 2 . -3 - (-2)
= -6 +2
= -4
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