Cho A là ma trận vuông cấp 3 có det(A)=3.
Định thức của ma trận 2A là:
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Định thức
Quiz
•
Mathematics
•
University
•
Medium
PHƯƠNG NGUYỄN
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A. 6
B. 24
C. 54
D. -6
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
.
A. 2
B. -2
C. 0
D. 4
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cho A là ma trận vuông cấp 4 có |A|=3.
Định thức của ma trận -A là:
A. 3
B. -3
C. 12
D. -12
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Với giá trị nào của m thì |A|=5 ?
A. 3
B. -3
C. 5
D. 4
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Với giá trị nào của m thì |A|<0?
A. m<2
B. m>2
C. m<3
D. m>4
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Ma trận nào sau đây có định thức bằng 1 ?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A. 11
B. 22
C. 10
D. 88
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