Linear Algebra Quiz
18 questions · no time limit
0:00
Finish quiz
DETERMINANTS
Question 1
of 18
Flag for review
No time limit
Current
Answered
Flagged
Not seen
The determinant of matrix
E
=
(
2
1
3
1
2
1
3
1
2
)
E = \begin{pmatrix} 2 & 1 & 3 \\ 1 & 2 & 1 \\ 3 & 1 & 2 \end{pmatrix}
E
=
2
1
3
1
2
1
3
1
2
can be computed most efficiently using which approach?
A
Cofactor expansion along any row, since all entries are small positive integers
B
Cofactor expansion along the main diagonal, since it contains the largest entries
C
Row operations to create zeros before expansion, since no row or column has zeros initially
D
Direct application of the Rule of Sarrus, since this is a 3×3 matrix with a symmetric pattern
YOUR PROGRESS
18
QUESTIONS
Ready when you are
Answer in any order. Your progress shows here as you go.
QUESTIONS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
KEYBOARD
Pick an answer
A
B
C
D
Next question
↵
→
Previous
←
Flag for review
F