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Homework 7, due
Friday October 21st
, in class
1.
Let
A
denote the matrix
1 1 1
1
1 2 4
8
1 3 5
9
1 4 7 11
.
Compute the determinant of
A
by hand
, using whatever rules or shortcuts
you ﬁnd helpful.
2a.
Find the determinant of

2
1
0
0
1

2
0
0
0
0

2
1
0
0
1

2
.
2b.
Find the determinant of
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Unformatted text preview: x 1 1xx 1 1x (your answer will be an expression involving x ). 2c. There are certain values of x that make the matrix in 2b have determinant 0. What are those values of x ?...
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This note was uploaded on 12/07/2011 for the course MATH 341 taught by Professor Zhang during the Fall '08 term at University of Delaware.
 Fall '08
 Zhang
 Determinant

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