Question

[2 3] times [2 -7]
[1 1] [3 -2]

Those are supposed to be matrices can anyone help me solve this?

Answer 1

like they are on top of each other beacause i dnt kno how to make a matix on here but they are 2x2 matrices

Answer 2

let
A=\[\left[\begin{matrix}2 & 3 \\ 1 & 1\end{matrix}\right]\]
and
B=\[\left[\begin{matrix}2 & -7 \\ 3 & -2\end{matrix}\right]\]
then AB=\[[A(first column of B)|A(secondcolumn of B)]\]
=\[\left[\begin{matrix}13 & -20 \\ 5 & -9\end{matrix}\right]\]

Answer 3

how did u do those brackets?

Answer 4

i dnt get how u got tht answer

Answer 5

See, multiply the corresponding elements of two matrices given and tell me what you get after multiplying??

Answer 6

dnt i do like 2x2 then 3x-7? like tht in order?
because 2x2 is not 13 nd i dnt kno whea he got tht from

Answer 7

See, I first give you my example then do this question on your own..



Getting or I should explain more??