Question 1

The value of the determinant   is

Accepted Answer

A) not able to be determined. 
B) 0. 
C) 80. 
D) -80. 
E) None of the above 
A) not able to be determined. 
B) 0. 
C) 80. 
D) -80. 
E) None of the above

Question 2

Define what a matrix transpose is.

Accepted Answer

a matrix's

Question 3

What size matrix is yielded when an n × m matrix is added to an n × m matrix?

Accepted Answer

The answer of What size matrix is yielded when an...

Question 4

The value of the determinant   is

Accepted Answer

A) -8. 
B) +8. 
C) -40. 
D) +40. 
E) None of the above 
A) -8. 
B) +8. 
C) -40. 
D) +40. 
E) None of the above

Question 5

What size matrix is yielded when an n × m matrix is multiplied by an m × p matrix?

Accepted Answer

The answer of What size matrix is yielded when an...

Question 6

Add the matrices   +   .

Accepted Answer

A)    
B)    
C)    
D)    
E) None of the above 
A)    
B)    
C)    
D)    
E) None of the above

Question 7

An n × n matrix,when multiplied by an n × n matrix,yields

Accepted Answer

A) an n × n matrix. 
B) a 2n matrix. 
C) an n2 + n2 matrix. 
D) an (n × n)2 matrix. 
E) None of the above 
A) an n × n matrix. 
B) a 2n matrix. 
C) an n2 + n2 matrix. 
D) an (n × n)2 matrix. 
E) None of the above

Question 8

Element 2,1 of the inverse of the matrix   is

Accepted Answer

A) -5. 
B) -4. 
C) 3. 
D) 7. 
E) None of the above 
A) -5. 
B) -4. 
C) 3. 
D) 7. 
E) None of the above

Question 9

As a mathematical tool,determinants are of value in helping to solve a series of simultaneous equations.

Accepted Answer

A) True 
 B)False

Question 10

Find the inverse of   .

Accepted Answer

The answer of Find the inverse of   ....

Question 11

We can find only the inverse of square matrices.

Accepted Answer

A) True 
 B)False

Question 12

All matrices have the same number of rows as columns.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following statements is not true about Matrix(ces)?

Accepted Answer

A) A matrix is a display of numbers arranged in rows and columns. 
B) Matrices are usually enclosed in parentheses or brackets. 
C) Matrices are used as an effective means of presenting or summarizing business data. 
D) Matrices cannot be considered as a quantitative tool. 
E) None of the above 
A) A matrix is a display of numbers arranged in rows and columns. 
B) Matrices are usually enclosed in parentheses or brackets. 
C) Matrices are used as an effective means of presenting or summarizing business data. 
D) Matrices cannot be considered as a quantitative tool. 
E) None of the above

Question 14

Determine the inverse of the matrix   .

Accepted Answer

The answer of Determine the inverse of the matrix ...

Question 15

Element 1,2 of the inverse of the matrix   is

Accepted Answer

A) -5. 
B) -4. 
C) 3. 
D) 7. 
E) None of the above 
A) -5. 
B) -4. 
C) 3. 
D) 7. 
E) None of the above

Question 16

=

Accepted Answer

A)    
B)    
C)    
D)    
E) None of the above 
A)    
B)    
C)    
D)    
E) None of the above

Question 17

We can develop an n × m matrix by the addition of an n × m matrix and an n × p matrix,where p < n.

Accepted Answer

A) True 
 B)False

Question 18

The value of the determinant   is

Accepted Answer

A) 2. 
B) 14. 
C) -42. 
D) 42. 
E) None of the above 
A) 2. 
B) 14. 
C) -42. 
D) 42. 
E) None of the above

Question 19

What size matrix is yielded when an n × m matrix is multiplied by an m × n matrix?

Accepted Answer

The answer of What size matrix is yielded when an...

Question 20

[1 5]   =

Accepted Answer

A) [35 27] 
B)    
C)    
D)    
E) None of the above 
A) [35 27] 
B)    
C)    
D)    
E) None of the above

Exam 20: Mathematical Tools: Determinants and Matrices

The value of the determinant is

Define what a matrix transpose is.

What size matrix is yielded when an n × m matrix is added to an n × m matrix?

The value of the determinant is

What size matrix is yielded when an n × m matrix is multiplied by an m × p matrix?

Add the matrices + .

An n × n matrix,when multiplied by an n × n matrix,yields

Element 2,1 of the inverse of the matrix is

As a mathematical tool,determinants are of value in helping to solve a series of simultaneous equations.

Find the inverse of .

We can find only the inverse of square matrices.

All matrices have the same number of rows as columns.

Which of the following statements is not true about Matrix(ces)?

Determine the inverse of the matrix .

Element 1,2 of the inverse of the matrix is

=

We can develop an n × m matrix by the addition of an n × m matrix and an n × p matrix,where p < n.

The value of the determinant is

What size matrix is yielded when an n × m matrix is multiplied by an m × n matrix?

[1 5] =

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