7.01 Matrices and Determinants Quiz

7.01 Matrices and Determinants Quiz

Question 1

1. Which of the following is the correct matrix representation of the August Inventory of small and large t-shirts and pants?

   	Inventory for August		Inventory for September		Inventory for October
   	Small	Large	Small	Large	Small	Large
   T-Shirts	2	3	4	6	7	8
   Pants	1	4	3	5	5	6

   
   

2 points

Question 2

1. If and find 2A + 2B.
   

2 points

Question 3

1. If find -2B.
   

2 points

Question 4

1. If and find A + B.
   

2 points

Question 5

1. Matrix A has dimensions 2 x 3. Matrix B has dimensions 3 x 6. These two matrices can be multiplied to find the product AB.
   

   
   True
   
   False
   

2 points

Question 6

1. If and find A x B.
   

2 points

Question 7

1. If and find A x B.
   

   		Does not exist.

2 points

Question 8

1. Evaluate
   

   		Does not exist.

2 points

Question 9

1. Find the determinant of
   

   		14
   		-14
   		1
   		-1

2 points

Question 10

1. Does the matrix have an inverse?
   

   		yes
   		no

2 points

Question 11

1. What is the determinant of the following matrix?
   

   		-13
   		7
   		-1
   		12

2 points

Question 12

1. What is the determinant of the following matrix? Does the matrix have an inverse?
   

   		-7; no
   		-7; yes
   		1; yes
   		1; no