The Determinant of a Matrix in Exercises 25-30, find | A − 1 | .Being by finding A − 1 , and then evaluate its determinant. Verify your result by finding | A | and then applying the formula from Theorem 3.8, | A − 1 | = 1 | A | . A = [ 1 − 2 2 2 ]
The Determinant of a Matrix in Exercises 25-30, find | A − 1 | .Being by finding A − 1 , and then evaluate its determinant. Verify your result by finding | A | and then applying the formula from Theorem 3.8, | A − 1 | = 1 | A | . A = [ 1 − 2 2 2 ]
Solution Summary: The author explains how to find the cofactor C_ij for the matrix A.
The Determinant of a Matrix in Exercises 25-30, find
|
A
−
1
|
.Being by finding
A
−
1
, and then evaluate its determinant. Verify your result by finding
|
A
|
and then applying the formula from Theorem 3.8,
|
A
−
1
|
=
1
|
A
|
.
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Solve the linear system of equations attached using Gaussian elimination (not Gauss-Jordan) and back subsitution.
Remember that:
A matrix is in row echelon form if
Any row that consists only of zeros is at the bottom of the matrix.
The first non-zero entry in each other row is 1. This entry is called aleading 1.
The leading 1 of each row, after the first row, lies to the right of the leading 1 of the previous row.
Chapter 3 Solutions
Bundle: Elementary Linear Algebra, Loose-leaf Version, 8th + WebAssign Printed Access Card for Larson's Elementary Linear Algebra, 8th Edition, Single-Term
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HOW TO FIND DETERMINANT OF 2X2 & 3X3 MATRICES?/MATRICES AND DETERMINANTS CLASS XII 12 CBSE; Author: Neha Agrawal Mathematically Inclined;https://www.youtube.com/watch?v=bnaKGsLYJvQ;License: Standard YouTube License, CC-BY