linear algebra
Authored by PRABANAND S C
Engineering
University
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20 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following is a scalar quantity?
A row vector
A single numbeR
A column vector
A matrix
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
The determinant of a 2×2 matrix
[acbd] is:
a+b+c+d
ab−cd
ad−bc
ac−bd
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
The dot product of two orthogonal vectors is:
0
1
-1
Undefined
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Eigenvalues of an identity matrix are always:
Both 1 and -1
-1
0
1
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following is true for symmetric matrices?
A2=I
A=−AT
A=AT
AT=0
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
If vector u=(3,4), then its magnitude is:
5
25
12
7
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
The inverse of the identity matrix is:
Zero matrix
Not defined
Determinant of the matrix
Identity matrix itself
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