Question 1

Element 2,2 of the inverse of the matrix   is

Accepted Answer

A) -5. 
B) -4. 
C) 3. 
D) 7. 
A) -5. 
B) -4. 
C) 3. 
D) 7.

Question 2

Perform this matrix multiplication:   ×   =

Accepted Answer

The answer of Perform this matrix multiplication:   ×...

Question 3

The value of the determinant   is

Accepted Answer

A) not able to be determined. 
B) 0. 
C) 80. 
D) -80. 
A) not able to be determined. 
B) 0. 
C) 80. 
D) -80.

Question 4

A matrix having only a single column with multiple rows, or a single row with multiple columns, is called a vector.

Accepted Answer

A) True 
 B)False

Question 5

=

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 6

We can develop an n × m matrix by adding an n × p matrix and an n × r matrix where p + r = m.

Accepted Answer

A) True 
 B)False

Question 7

The correct determinant value for the determinant   would be

Accepted Answer

A) 0. 
B) 48. 
C) 32. 
D) 24. 
A) 0. 
B) 48. 
C) 32. 
D) 24.

Question 8

An n × m determinant is the same as an n × m matrix.

Accepted Answer

A) True 
 B)False

Question 9

The value of the determinant   is

Accepted Answer

A) 128. 
B) 96. 
C) 8. 
D) 232. 
A) 128. 
B) 96. 
C) 8. 
D) 232.

Question 10

×   =

Accepted Answer

A) True 
 B)False

Question 11

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 12

We cannot multiply an n × m matrix by a 1 × m matrix.

Accepted Answer

A) True 
 B)False

Question 13

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 14

=

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 15

Multiply matrix   by   .

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

Element 1,2 of the inverse of the matrix   is

Accepted Answer

A) -5. 
B) -4. 
C) 3. 
D) 7. 
A) -5. 
B) -4. 
C) 3. 
D) 7.

Question 18

We cannot multiply an n × m matrix by an m × 1 matrix.

Accepted Answer

A) True 
 B)False

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

Multiply matrix   by   .

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Exam 20: Mathematical Tools: Determinants and Matrices

Element 2,2 of the inverse of the matrix is

Perform this matrix multiplication: × =

The value of the determinant is

A matrix having only a single column with multiple rows, or a single row with multiple columns, is called a vector.

=

We can develop an n × m matrix by adding an n × p matrix and an n × r matrix where p + r = m.

The correct determinant value for the determinant would be

An n × m determinant is the same as an n × m matrix.

The value of the determinant is

× =

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

We cannot multiply an n × m matrix by a 1 × m matrix.

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

=

Multiply matrix by .

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

Element 1,2 of the inverse of the matrix is

We cannot multiply an n × m matrix by an m × 1 matrix.

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

Multiply matrix by .

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