A factory records its inventory in matrix X , where column 1 represents Model A of a product, column 2 represents Model B of the same product, and each row represents a color of the product. Matrix M is the price of Model A (row 1) and Model B (row 2). Compute matrix XM and give its physical interpretation.
$X=\left[\begin{array}{rr}
25 & 10 \
30 & 50 \
15 & 40 \
10 & 5
\end{array}\right] \text { and } M=\left[\begin{array}{c}
220 \
250
\end{array}\right]$

Question

A factory records its inventory in matrix  X , where column 1 represents Model  A  of a product, column 2 represents Model  B  of the same product, and each row represents a color of the product. Matrix  M  is the price of Model A (row 1) and Model B (row 2). Compute matrix  XM  and give its physical interpretation.
$X=\left[\begin{array}{rr}
25 & 10 \
30 & 50 \
15 & 40 \
10 & 5
\end{array}\right] \text { and } M=\left[\begin{array}{c}
220 \
250
\end{array}\right]$

Quizplus · Accepted Answer

The Answer of A factory records its inventory in matrix  X , where column 1 represents Model  A  of a product, column 2 represents Model  B  of the same product, and each row represents a color of the product. Matrix  M  is the price of Model A (row 1) and Model B (row 2). Compute matrix  XM  and give its physical interpretation.
$X=\left[\begin{array}{rr}
25 & 10 \
30 & 50 \
15 & 40 \
10 & 5
\end{array}\right] \text { and } M=\left[\begin{array}{c}
220 \
250
\end{array}\right]$

A Factory Records Its Inventory in Matrix X