Matematika Sekolah Menengah Atas Quiz______________Diketahui :[tex]A = \begin{bmatrix}2&4 \\ 1&2 \\ \end{bmatrix}[/tex][tex]B = \begin{bmatrix}1&2 \\ 1&3\\ \end{bmatrix}[/tex]~~~~Maka, nilai AB adalah ...​

maciabshireulv – March 21, 2023

Quiz

______________

Diketahui :

[tex]A = \begin{bmatrix}2&4 \\ 1&2 \\ \end{bmatrix}[/tex]
[tex]B = \begin{bmatrix}1&2 \\ 1&3\\ \end{bmatrix}[/tex]

~~~~

Maka, nilai AB adalah ...
​

Jawaban:

Matrix ordo 2 x 2

..

x = [a b] x [e f]

[c d]. [g h]

x = [ae + bg af + bh]

[ce + dg cf + dh]

maka,

A = [2 4] dan B = [1 2]

[ 1 2 ] [1 3]

AB = ?

AB = [2 4] x [1 2]

[1 2 ] [1 3]

AB = [2.1 + 4.1 2.2 + 4.3]

[1.1 + 2.1. 1.2 + 2.3 ]

AB = [2 + 4 4 + 12]

[1 + 2. 2 + 6]

AB = [6 16]

[3 8]

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