Pertanyaan
30. Adjoint dari matriks [} 5&-8 4&-6 ] adalah __ a. [} 5&-8 4&-6 ] b. [} -6&8 -4&5 ] c. [} -5&8 -4&-6 ] d. [} 6&-8 4&-5 ] e. [} -6&-8 4&-5 ]
Solusi
3.5
(255 Suara)
Faraz
profesional ยท Tutor selama 6 tahun
Jawaban
B
Penjelasan
Given matrix [5 -8 4 -6], the adjoint of a 2x2 matrix is found by swapping the two elements on the main diagonal (top left and bottom right) and changing the sign of the other two elements(bottom left and top right). Therefore, Applied to our matrix, we will swap 5 and -6 and change the sign of -8 and 4.So, the adjoint of [5,-8,4,-6] is [-6,8,-4,5]