Answered: a 0 u v --БЯЕЯ I 15. a. 0 b 0 0 0 С 2 U… | bartleby

Algebra & Trigonometry with Analytic Geometry

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter1: Fundamental Concepts Of Algebra

Section1.2: Exponents And Radicals

Problem 92E

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1.7 Question 15 on paper please

a 0 0
V
0
15. a.
6666
0 b
u
b
0 0
X y
0 0
u V
a 0 01
r
S
t
a
16. a.
X
8]
b. 0 b 0
u
U w
y
LO O
x
y Z
In Exercises 17-18, create a symmetric matrix by substituting appro-
priate numbers for the x's.
1
X
X
X
3
17. a.
(²2)
b.
3
7
5 -7
18. a.
[3]
b.
-6
X
3.
In Exercises 19-22, determine by inspection whether the matrix
invertible.
ГО
6 -11
0
20.
3
4:11
19.
7
0
0
0
0
-2
Г 2
0
0
W
H
1
X
X
-8 0
-3 9
-3
t
XXX
хх
X
N
0
0
с
01

To
0
-5
In Exercises 7-10, find A2, A-2, and A-k (where k is any integer)
inspection.
-6
0
7. A =
0
3 0
8. A =
0
0 5
-2
0
0 -4
9. A =
10. A =
0
0
0
0
In Exercises 11-12, compute the product by inspection.
1
0
0][2
0 07 ГО
0
0
11.
0
0 0
0
5
0 0
20
0 3
0 0
0
0 1]
-1
0
0] [3
0 015
0
01
12.
H
⠀⠀⠀
0 2 0
0
5
0 0 -2
0
0
0 4
0
0 7. 0
0
In Exercises 13-14, compute the indicated quantity.
139
1000
13.
[ Th
14.
E
In Exercises 15-16, use what you have learned in this section
about multiplying by diagonal matrices to compute the product by
inspection.
0
0
-3
0
0
0
2

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