Consider the matrix [2 7 31 1 3 2 3 7 5 a) Write the cofactor of each element of the matrix A. b) Write the adjoint matrix of A (adj (A)). c) Find the determinant of A (det(A)). A =

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter6: Matrices And Determinants
Section: Chapter Questions
Problem 11CC
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Consider the matrix
[2 7 31
1 3 2
L3 7 5
a) Write the cofactor of each element of the matrix A.
b) Write the adjoint matrix of A (adj (A)).
c) Find the determinant of A (det (A) ).
d) Find the inverse of A (using the adjoint matrix).
A =
Transcribed Image Text:Consider the matrix [2 7 31 1 3 2 L3 7 5 a) Write the cofactor of each element of the matrix A. b) Write the adjoint matrix of A (adj (A)). c) Find the determinant of A (det (A) ). d) Find the inverse of A (using the adjoint matrix). A =
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