Chapter7: Matrices And Determinants
Section7.2: Operations With Matrices
Problem 1ECP: Solve for a11, a12, a21 and a22 in the matrix equation a11a12a21a22=6324.
Related questions
Question
![If A is n x n matrix where A
|2A|
= 5 and
80 then
a. n=3
b. n=2
C. n=4
d. n=8
4/5](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2c71a2a0-c0d0-474a-a8c9-4d5f5d5727df%2F1481d3e0-2b64-4a01-9920-f8fa54b9fdf5%2Fakap7m7_processed.jpeg&w=3840&q=75)
Transcribed Image Text:If A is n x n matrix where A
|2A|
= 5 and
80 then
a. n=3
b. n=2
C. n=4
d. n=8
4/5
![Suppose Q is an orthogonal matrix and C is its
cofactor matrix then:
a. C = QT
b. C = -QT
c. C = +Q
d. C = I
3/5](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2c71a2a0-c0d0-474a-a8c9-4d5f5d5727df%2F1481d3e0-2b64-4a01-9920-f8fa54b9fdf5%2Fnh2yron_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Suppose Q is an orthogonal matrix and C is its
cofactor matrix then:
a. C = QT
b. C = -QT
c. C = +Q
d. C = I
3/5
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