4
You visited us
4
times! Enjoying our articles?
Unlock Full Access!
Byju's Answer
Standard X
Mathematics
Multiplication of Matrices
If A and B ar...
Question
If A and B are square matrices of order 3 and |A| = 5, |B| = 5, then |3AB| = ____________.
Open in App
Solution
Given:
A and B are square matrices of order 3
|A| = 5
|B| = 5
Now
,
3
A
B
=
3
A
B
∵
A
B
=
A
B
,
if
they
are
square
matrices
of
same
order
=
3
A
×
5
∵
B
=
5
=
3
3
A
×
5
∵
Order
of
A
is
3
×
3
=
135
A
=
135
×
5
∵
A
=
5
=
675
Hence, |3AB| =
675
.
Suggest Corrections
0
Similar questions
Q.
If A and B are square matrices of order 3 such that |A| = –1, |B| = 3, then |3AB| = _____________.
Q.
If A and B are square matrices of order 3 such that |A| = − 1, |B| = 3, then find the value of |3 AB|.
Q.
If A and B are square matrices of second order such that
|
A
|
=
−
1
,
|
B
|
=
3
, then what is
|
3
A
B
|
equal to?
Q.
If
A
and
B
are square matrices of order 3 such that
|
A
|
=
−
1
,
|
B
|
=
3
, then the determinant of
3
A
B
is equal to
Q.
If A and B are square matrices of order 3 such that
|
A
|
=
−
1
,
|
B
|
=
3
then
|
3
A
B
|
is equals to
View More
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
Related Videos
Adaptive Q1
MATHEMATICS
Watch in App
Explore more
Multiplication of Matrices
Standard X Mathematics
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
AI Tutor
Textbooks
Question Papers
Install app