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Quiz 2 (4.3 - 4.5) Operations w/ Matrices

Total questions: 22

Worksheet time: 1hrs 12mins

Name
Class
Date
1.

What is the value of m?

(row one, column one of the matrix produced)

(a)  

2.

What is the value of n?

(row two, column one of the matrix produced)

(a)  

3.

What is the value of p?

(row one, column two of the matrix produced)

(a)  

4.

What is the value of q?

(row two, column two of the matrix produced)

(a)  

5.
Find A+B
a)
8     10
8      1 
b)
12     25
7     1
c)
10     30
0     1
d)
can't add two together because the rows dont match columns
6.
Find A-B
a)
-3     1
7     -1
b)
1     0
1     -4
c)
-4       0
6     -1
d)
not possible because rows do not match columns
7.

Let Matrix C = 3A - 4B. What is the value of c11 ?

(element in row one, column one)

(a)  

8.

Let Matrix C = 3A - 4B. What is the value of c12 ?

(element in row one, column two)

(a)  

9.

Let Matrix C = 3A - 4B. What is the value of c21 ?

(element in row two, column one)

(a)  

10.

Let Matrix C = 3A - 4B. What is the value of c22 ?

(element in row two, column two)

(a)  

11.

Let A the product of the two Matrices given. How many rows will the new matrix A have?

(a)  

12.

Let A the product of the two Matrices given. How many columns will the new matrix A have?

(a)  

13.

Let A the product of the two Matrices Given. Find the value of a11 .

(a)  

14.

Let A the product of the two Matrices Given. Find the value of a12 .

(a)  

15.

Let A the product of the two Matrices Given. Find the value of a21 .

(a)  

16.

Let A the product of the two Matrices Given. Find the value of a22 .

(a)  

17.

Can the following two matrices be multiplied? If so what will dimensions of the product matrix be?

a)

Yes, the product will be a 2 x 1 matrix

b)

Yes, the product will be a 1 x 1 matrix

c)

Yes, the product will be a 2 x 2 matrix

d)

The matrices cannot be multiplied since the dimensions are not the same.

18.

Can the following two matrices be multiplied? If so what will dimensions of the product matrix be?

a)

Yes, the product will be a 2 x 3 matrix

b)

Yes, the product will be a 3 x 3 matrix

c)

Yes, the product will be a 3 x 2 matrix

d)

The matrices cannot be multiplied.

19.

Let A be the matrix produced from the following operations. Give the value of a11.

(a)  

20.

Let A be the matrix produced from the following operations. Give the value of a12.

(a)  

21.

Let A be the matrix produced from the following operations. Give the value of a21.

(a)  

22.

Let A be the matrix produced from the following operations. Give the value of a22.

(a)