SOLUTION: For the matrix A =
(-6 3 9)
( 3 6 -2)
( 5 1 4)
a. Find the determinant of the matrix AT (Transpose).
b. Find the matrix of cofactors.
c. Hence,find A-1(Inver
Algebra.Com
Question 1112690: For the matrix A =
(-6 3 9)
( 3 6 -2)
( 5 1 4)
a. Find the determinant of the matrix AT (Transpose).
b. Find the matrix of cofactors.
c. Hence,find A-1(Inverse).
d. If B =
(-2 1 3)
( 3 6 -2)
( 5 1 4)
find |B|.
Answer by ikleyn(52814) (Show Source): You can put this solution on YOUR website!
.
See the lessons
- Determinant of a 3x3 matrix
- Co-factoring the determinant of a 3x3 matrix
in this site.
Also, you have this free of charge online textbook in ALGEBRA-II in this site
- ALGEBRA-II - YOUR ONLINE TEXTBOOK.
The referred lessons are the part of this online textbook under the topic
"3x3-Matrices, determinants, Cramer's rule for systems in three unknowns"
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