Evaluate the determinant of the given matrix by reducing the matrix to row-echelon form. 1 -20 +# A = -2 2 7 2 -5 6
Evaluate the determinant of the given matrix by reducing the matrix to row-echelon form. 1 -20 +# A = -2 2 7 2 -5 6
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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The answer is apparently -5, but when I reduced it to row echelon form I got 10.
Also, am I only supposed to make the lower triangualr numbers zero when reducing to row echelon form?
Transcribed Image Text:Evaluate the determinant of the given matrix by reducing the matrix to row-echelon form.
1
-2
2
||
-2 0
2 7
6
-5
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