If the matrices can be multiplied, what dimension is the product? If not, write undefined.
Matrix Flashcard

Flashcard
•
Mathematics
•
11th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
(2 x 2)
2.
FLASHCARD QUESTION
Front
Name the dimensions of the matrix.
Back
2x4
3.
FLASHCARD QUESTION
Front
How many rows are in a 7 x 3 matrix?
Back
7
4.
FLASHCARD QUESTION
Front
What is a matrix?
Back
A rectangular array of numbers written within brackets.
5.
FLASHCARD QUESTION
Front
Add the following matrices: \[\begin{bmatrix} 11 & 8 \\ -4 & 2 \end{bmatrix} + \begin{bmatrix} 3 & 2 \\ -6 & -6 \end{bmatrix}\]
Back
\[\begin{bmatrix} 11+3 & 8+2 \\ -4-6 & 2-6 \end{bmatrix} = \begin{bmatrix} 14 & 10 \\ -10 & -4 \end{bmatrix}\]
6.
FLASHCARD QUESTION
Front
What are the dimensions of a matrix with 4 rows and 2 columns?
Back
4x2
7.
FLASHCARD QUESTION
Front
What is the identity matrix of size 2?
Back
\[\begin{bmatrix} 1 & 0 \\ 0 & 1 \end{bmatrix}\]
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