Tentukan determinan matriks-matriks berikut ! a. (5−37−8)

Pertanyaan

Tentukan determinan matriks-matriks berikut !

a. $\begin{pmatrix}5&7\\-3&-8\end{pmatrix}$

Y. Endah

Master Teacher

Mahasiswa/Alumni Institut Teknologi Bandung

Jawaban terverifikasi

Pembahasan

Ingat

table attributes columnalign right center left columnspacing 0px end attributes row A equals cell open parentheses table row a b row c d end table close parentheses end cell row cell open vertical bar A close vertical bar end cell equals cell a d minus b c end cell end table

sehingga

table attributes columnalign right center left columnspacing 0px end attributes row cell open vertical bar table row 5 7 row cell negative 3 end cell cell negative 8 end cell end table close vertical bar end cell equals cell negative 40 plus 21 end cell row blank equals cell negative 19 end cell end table