Algebra Foundations
2nd Edition
ISBN: 9780135257500
Author: Martin-Gay
Publisher: PEARSON
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Chapter 21.3, Problem 15ES
To determine
To find: The value of
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a
Question 7. If det d e f
ghi
V3
= 2. Find det
-1
2
Question 8. Let A = 1
4
5
0
3
2.
1 Find adj (A)
2 Find det (A)
3
Find A-1
2g 2h 2i
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2a 2b 2c
Question 1. Solve the system
-
x1 x2 + 3x3 + 2x4
-x1 + x22x3 + x4
2x12x2+7x3+7x4
Question 2. Consider the system
= 1
=-2
= 1
3x1 - x2 + ax3
= 1
x1 + 3x2 + 2x3
x12x2+2x3
= -b
= 4
1 For what values of a, b will the system be inconsistent?
2 For what values of a, b will the system have only one solution?
For what values of a, b will the saystem have infinitely many solutions?
Question 5. Let A, B, C ben x n-matrices, S is nonsigular. If A = S-1 BS, show that
det (A) = det (B)
Question 6. For what values of k is the matrix A = (2- k
-1
-1
2) singular?
k
Chapter 21 Solutions
Algebra Foundations
Ch. 21.1 - Use the choices below to fill in each blank....Ch. 21.1 - Prob. 2VRVCCh. 21.1 - Prob. 3VRVCCh. 21.1 - Prob. 4VRVCCh. 21.1 - Prob. 5VRVCCh. 21.1 - Prob. 6VRVCCh. 21.1 - Prob. 1ESCh. 21.1 - Prob. 2ESCh. 21.1 - Prob. 3ESCh. 21.1 - Prob. 4ES
Ch. 21.1 - Prob. 5ESCh. 21.1 - Prob. 6ESCh. 21.1 - Prob. 7ESCh. 21.1 - Prob. 8ESCh. 21.1 - Prob. 9ESCh. 21.1 - Write the first five terms of each sequence, whose...Ch. 21.1 - Prob. 11ESCh. 21.1 - Prob. 12ESCh. 21.1 - Prob. 13ESCh. 21.1 - Prob. 14ESCh. 21.1 - Prob. 15ESCh. 21.1 - Prob. 16ESCh. 21.1 - Prob. 17ESCh. 21.1 - Prob. 18ESCh. 21.1 - Find the indicated term for each sequence, whose...Ch. 21.1 - Prob. 20ESCh. 21.1 - Prob. 21ESCh. 21.1 - Prob. 22ESCh. 21.1 - Prob. 23ESCh. 21.1 - Prob. 24ESCh. 21.1 - Prob. 25ESCh. 21.1 - Find the indicated term for each sequence, whose...Ch. 21.1 - Prob. 27ESCh. 21.1 - Prob. 28ESCh. 21.1 - Prob. 29ESCh. 21.1 - Prob. 30ESCh. 21.1 - Prob. 31ESCh. 21.1 - Prob. 32ESCh. 21.1 - Prob. 33ESCh. 21.1 - Prob. 34ESCh. 21.1 - Find a general term an for each sequence, whose...Ch. 21.1 - Prob. 36ESCh. 21.1 - Prob. 37ESCh. 21.1 - Prob. 38ESCh. 21.1 - Prob. 39ESCh. 21.1 - Prob. 40ESCh. 21.1 - Prob. 41ESCh. 21.1 - Prob. 42ESCh. 21.1 - Prob. 43ESCh. 21.1 - Prob. 44ESCh. 21.1 - Prob. 45ESCh. 21.1 - Prob. 46ESCh. 21.1 - Prob. 47ESCh. 21.1 - Prob. 48ESCh. 21.1 - Sketch the graph of each quadratic function. See...Ch. 21.1 - Prob. 50ESCh. 21.1 - Prob. 51ESCh. 21.1 - Prob. 52ESCh. 21.1 - Prob. 53ESCh. 21.1 - Prob. 54ESCh. 21.1 - Prob. 55ESCh. 21.1 - Prob. 56ESCh. 21.1 - Prob. 57ESCh. 21.1 - Prob. 58ESCh. 21.2 - Prob. 1VRVCCh. 21.2 - Prob. 2VRVCCh. 21.2 - Prob. 3VRVCCh. 21.2 - Prob. 4VRVCCh. 21.2 - Prob. 1ESCh. 21.2 - Prob. 2ESCh. 21.2 - Prob. 3ESCh. 21.2 - Prob. 4ESCh. 21.2 - Prob. 5ESCh. 21.2 - Prob. 6ESCh. 21.2 - Prob. 7ESCh. 21.2 - Prob. 8ESCh. 21.2 - Prob. 9ESCh. 21.2 - Prob. 10ESCh. 21.2 - Prob. 11ESCh. 21.2 - Prob. 12ESCh. 21.2 - Prob. 13ESCh. 21.2 - Prob. 14ESCh. 21.2 - Prob. 15ESCh. 21.2 - Prob. 16ESCh. 21.2 - Prob. 17ESCh. 21.2 - Prob. 18ESCh. 21.2 - Prob. 19ESCh. 21.2 - Prob. 20ESCh. 21.2 - Prob. 21ESCh. 21.2 - Prob. 22ESCh. 21.2 - Prob. 23ESCh. 21.2 - Prob. 24ESCh. 21.2 - Prob. 25ESCh. 21.2 - Prob. 26ESCh. 21.2 - Prob. 27ESCh. 21.2 - Prob. 28ESCh. 21.2 - Prob. 29ESCh. 21.2 - Prob. 30ESCh. 21.2 - Prob. 31ESCh. 21.2 - Prob. 32ESCh. 21.2 - Prob. 33ESCh. 21.2 - Prob. 34ESCh. 21.2 - Prob. 35ESCh. 21.2 - Prob. 36ESCh. 21.2 - Prob. 37ESCh. 21.2 - Prob. 38ESCh. 21.2 - Prob. 39ESCh. 21.2 - Prob. 40ESCh. 21.2 - Prob. 41ESCh. 21.2 - Prob. 42ESCh. 21.2 - Prob. 43ESCh. 21.2 - Prob. 44ESCh. 21.2 - Prob. 45ESCh. 21.2 - Prob. 46ESCh. 21.2 - Prob. 47ESCh. 21.2 - Prob. 48ESCh. 21.2 - Prob. 49ESCh. 21.2 - Prob. 50ESCh. 21.2 - Prob. 51ESCh. 21.2 - Prob. 52ESCh. 21.2 - Prob. 53ESCh. 21.2 - Prob. 54ESCh. 21.2 - Solve. See Example 5 and 10. Jose takes a job that...Ch. 21.2 - Prob. 56ESCh. 21.2 - Prob. 57ESCh. 21.2 - Prob. 58ESCh. 21.2 - Prob. 59ESCh. 21.2 - Prob. 60ESCh. 21.2 - Prob. 61ESCh. 21.2 - Prob. 62ESCh. 21.2 - Prob. 63ESCh. 21.2 - Prob. 64ESCh. 21.2 - Prob. 65ESCh. 21.2 - Prob. 66ESCh. 21.2 - Prob. 67ESCh. 21.2 - Prob. 68ESCh. 21.2 - Prob. 69ESCh. 21.3 - Prob. 1VRVCCh. 21.3 - Prob. 2VRVCCh. 21.3 - Prob. 3VRVCCh. 21.3 - Prob. 4VRVCCh. 21.3 - Prob. 5VRVCCh. 21.3 - Prob. 6VRVCCh. 21.3 - Prob. 1ESCh. 21.3 - Prob. 2ESCh. 21.3 - Prob. 3ESCh. 21.3 - Prob. 4ESCh. 21.3 - Prob. 5ESCh. 21.3 - Prob. 6ESCh. 21.3 - Prob. 7ESCh. 21.3 - Prob. 8ESCh. 21.3 - Prob. 9ESCh. 21.3 - Prob. 10ESCh. 21.3 - Prob. 11ESCh. 21.3 - Prob. 12ESCh. 21.3 - Prob. 13ESCh. 21.3 - Prob. 14ESCh. 21.3 - Prob. 15ESCh. 21.3 - Prob. 16ESCh. 21.3 - Prob. 17ESCh. 21.3 - Prob. 18ESCh. 21.3 - Prob. 19ESCh. 21.3 - Prob. 20ESCh. 21.3 - Prob. 21ESCh. 21.3 - Prob. 22ESCh. 21.3 - Prob. 23ESCh. 21.3 - Prob. 24ESCh. 21.3 - Prob. 25ESCh. 21.3 - Prob. 26ESCh. 21.3 - Prob. 27ESCh. 21.3 - Prob. 28ESCh. 21.3 - Prob. 29ESCh. 21.3 - Prob. 30ESCh. 21.3 - Prob. 31ESCh. 21.3 - Prob. 32ESCh. 21.3 - Prob. 33ESCh. 21.3 - Prob. 34ESCh. 21.3 - Prob. 35ESCh. 21.3 - Prob. 36ESCh. 21.3 - Prob. 37ESCh. 21.3 - Prob. 38ESCh. 21.3 - Prob. 39ESCh. 21.3 - Prob. 40ESCh. 21.3 - Prob. 41ESCh. 21.3 - Prob. 42ESCh. 21.3 - Prob. 43ESCh. 21.3 - Prob. 44ESCh. 21.3 - Prob. 45ESCh. 21.3 - Prob. 46ESCh. 21.3 - Prob. 47ESCh. 21.3 - Prob. 48ESCh. 21.3 - Prob. 49ESCh. 21.3 - Prob. 50ESCh. 21.3 - Prob. 51ESCh. 21.3 - Prob. 52ESCh. 21.3 - Prob. 53ESCh. 21.3 - Prob. 54ESCh. 21.3 - Prob. 55ESCh. 21.3 - Prob. 56ESCh. 21.3 - Prob. 57ESCh. 21.3 - Prob. 58ESCh. 21.3 - Prob. 59ESCh. 21.3 - Prob. 60ESCh. 21.4 - Prob. 1VRVCCh. 21.4 - Prob. 2VRVCCh. 21.4 - Prob. 3VRVCCh. 21.4 - Prob. 4VRVCCh. 21.4 - Prob. 5VRVCCh. 21.4 - Prob. 6VRVCCh. 21.4 - Prob. 1ESCh. 21.4 - Prob. 2ESCh. 21.4 - Prob. 3ESCh. 21.4 - Prob. 4ESCh. 21.4 - Prob. 5ESCh. 21.4 - Prob. 6ESCh. 21.4 - Prob. 7ESCh. 21.4 - Prob. 8ESCh. 21.4 - Prob. 9ESCh. 21.4 - Prob. 10ESCh. 21.4 - Prob. 11ESCh. 21.4 - Prob. 12ESCh. 21.4 - Prob. 13ESCh. 21.4 - Prob. 14ESCh. 21.4 - Prob. 15ESCh. 21.4 - Prob. 16ESCh. 21.4 - Prob. 17ESCh. 21.4 - Prob. 18ESCh. 21.4 - Prob. 19ESCh. 21.4 - Prob. 20ESCh. 21.4 - Prob. 21ESCh. 21.4 - Prob. 22ESCh. 21.4 - Prob. 23ESCh. 21.4 - Prob. 24ESCh. 21.4 - Prob. 25ESCh. 21.4 - Prob. 26ESCh. 21.4 - Prob. 27ESCh. 21.4 - Prob. 28ESCh. 21.4 - Prob. 29ESCh. 21.4 - Prob. 30ESCh. 21.4 - Prob. 31ESCh. 21.4 - Prob. 32ESCh. 21.4 - Prob. 33ESCh. 21.4 - Prob. 34ESCh. 21.4 - Prob. 35ESCh. 21.4 - Prob. 36ESCh. 21.4 - Prob. 37ESCh. 21.4 - Prob. 38ESCh. 21.4 - Prob. 39ESCh. 21.4 - Prob. 40ESCh. 21.4 - Prob. 41ESCh. 21.4 - Prob. 42ESCh. 21.4 - Prob. 43ESCh. 21.4 - Prob. 44ESCh. 21.4 - Prob. 45ESCh. 21.4 - Prob. 46ESCh. 21.4 - Prob. 47ESCh. 21.4 - Prob. 48ESCh. 21.4 - Prob. 49ESCh. 21.4 - Prob. 50ESCh. 21.4 - Prob. 51ESCh. 21.4 - Prob. 52ESCh. 21.4 - Prob. 53ESCh. 21.4 - Prob. 54ESCh. 21.4 - Prob. 55ESCh. 21.4 - Prob. 56ESCh. 21.4 - Prob. 57ESCh. 21.4 - Prob. 58ESCh. 21.4 - Prob. 59ESCh. 21.4 - Prob. 60ESCh. 21.4 - Prob. 61ESCh. 21.4 - Prob. 62ESCh. 21.4 - Prob. 63ESCh. 21.4 - Prob. 64ESCh. 21.5 - Prob. 1VRVCCh. 21.5 - Prob. 2VRVCCh. 21.5 - Prob. 3VRVCCh. 21.5 - Prob. 4VRVCCh. 21.5 - Prob. 5VRVCCh. 21.5 - Prob. 6VRVCCh. 21.5 - Prob. 1ESCh. 21.5 - Prob. 2ESCh. 21.5 - Prob. 3ESCh. 21.5 - Prob. 4ESCh. 21.5 - Prob. 5ESCh. 21.5 - Prob. 6ESCh. 21.5 - Prob. 7ESCh. 21.5 - Prob. 8ESCh. 21.5 - Prob. 9ESCh. 21.5 - Prob. 10ESCh. 21.5 - Prob. 11ESCh. 21.5 - Prob. 12ESCh. 21.5 - Prob. 13ESCh. 21.5 - Prob. 14ESCh. 21.5 - Prob. 15ESCh. 21.5 - Prob. 16ESCh. 21.5 - Prob. 17ESCh. 21.5 - Prob. 18ESCh. 21.5 - Prob. 19ESCh. 21.5 - Prob. 20ESCh. 21.5 - Prob. 21ESCh. 21.5 - Prob. 22ESCh. 21.5 - Prob. 23ESCh. 21.5 - Prob. 24ESCh. 21.5 - Prob. 25ESCh. 21.5 - Prob. 26ESCh. 21.5 - Prob. 27ESCh. 21.5 - Prob. 28ESCh. 21.5 - Prob. 29ESCh. 21.5 - Prob. 30ESCh. 21.5 - Prob. 31ESCh. 21.5 - Prob. 32ESCh. 21.5 - Prob. 33ESCh. 21.5 - Prob. 34ESCh. 21.5 - Prob. 35ESCh. 21.5 - Prob. 36ESCh. 21.5 - Prob. 37ESCh. 21.5 - Prob. 38ESCh. 21.5 - Prob. 39ESCh. 21.5 - Prob. 40ESCh. 21.5 - Prob. 41ESCh. 21.5 - Prob. 42ESCh. 21.5 - Prob. 43ESCh. 21.5 - Prob. 44ESCh. 21.5 - Prob. 45ESCh. 21.5 - Prob. 46ESCh. 21.5 - Prob. 47ESCh. 21.5 - Prob. 48ESCh. 21.5 - Prob. 49ESCh. 21.5 - Prob. 50ESCh. 21.5 - Prob. 51ESCh. 21.5 - Prob. 52ESCh. 21.5 - Prob. 53ESCh. 21.5 - Prob. 54ESCh. 21.5 - Prob. 55ESCh. 21.5 - Prob. 56ESCh. 21 - Prob. 1IRCh. 21 - Prob. 2IRCh. 21 - Prob. 3IRCh. 21 - Prob. 4IRCh. 21 - Prob. 5IRCh. 21 - Prob. 6IRCh. 21 - Prob. 7IRCh. 21 - Prob. 8IRCh. 21 - Prob. 9IRCh. 21 - Prob. 10IRCh. 21 - Prob. 11IRCh. 21 - Prob. 12IRCh. 21 - Prob. 13IRCh. 21 - Prob. 14IRCh. 21 - Prob. 15IRCh. 21 - Prob. 16IRCh. 21 - Prob. 17IRCh. 21 - Prob. 18IRCh. 21 - Prob. 19IRCh. 21 - Prob. 20IRCh. 21 - Prob. 21IRCh. 21 - Prob. 22IRCh. 21 - Find each partial sum. Find the sum of the first...Ch. 21 - Prob. 24IRCh. 21 - Prob. 1VCCh. 21 - Prob. 2VCCh. 21 - Prob. 3VCCh. 21 - Prob. 4VCCh. 21 - Prob. 5VCCh. 21 - Prob. 6VCCh. 21 - Prob. 7VCCh. 21 - Prob. 8VCCh. 21 - Prob. 1RCh. 21 - Prob. 2RCh. 21 - Prob. 3RCh. 21 - Prob. 4RCh. 21 - Prob. 5RCh. 21 - Prob. 6RCh. 21 - Prob. 7RCh. 21 - Prob. 8RCh. 21 - Prob. 9RCh. 21 - Prob. 10RCh. 21 - Prob. 11RCh. 21 - Prob. 12RCh. 21 - Prob. 13RCh. 21 - Prob. 14RCh. 21 - Prob. 15RCh. 21 - Prob. 16RCh. 21 - Prob. 17RCh. 21 - Prob. 18RCh. 21 - Prob. 19RCh. 21 - Prob. 20RCh. 21 - Prob. 21RCh. 21 - Prob. 22RCh. 21 - Prob. 23RCh. 21 - Prob. 24RCh. 21 - Prob. 25RCh. 21 - Prob. 26RCh. 21 - Prob. 27RCh. 21 - Prob. 28RCh. 21 - Prob. 29RCh. 21 - Prob. 30RCh. 21 - Prob. 31RCh. 21 - Prob. 32RCh. 21 - Prob. 33RCh. 21 - Prob. 34RCh. 21 - Prob. 35RCh. 21 - Prob. 36RCh. 21 - Prob. 37RCh. 21 - Prob. 38RCh. 21 - Prob. 39RCh. 21 - Prob. 40RCh. 21 - Prob. 41RCh. 21 - Prob. 42RCh. 21 - Prob. 43RCh. 21 - Prob. 44RCh. 21 - Prob. 45RCh. 21 - Prob. 46RCh. 21 - Prob. 47RCh. 21 - Prob. 48RCh. 21 - Prob. 49RCh. 21 - Prob. 50RCh. 21 - Prob. 51RCh. 21 - Prob. 52RCh. 21 - Prob. 53RCh. 21 - Prob. 54RCh. 21 - Prob. 55RCh. 21 - Prob. 56RCh. 21 - Prob. 57RCh. 21 - Prob. 58RCh. 21 - Solve. First year he owned his business and made...Ch. 21 - Prob. 60RCh. 21 - Prob. 61RCh. 21 - Prob. 62RCh. 21 - Prob. 63RCh. 21 - Prob. 64RCh. 21 - Prob. 65RCh. 21 - Prob. 66RCh. 21 - Prob. 67RCh. 21 - Prob. 68RCh. 21 - Prob. 69RCh. 21 - Prob. 70RCh. 21 - Prob. 71RCh. 21 - Prob. 72RCh. 21 - Prob. 73RCh. 21 - Prob. 74RCh. 21 - Prob. 75RCh. 21 - Prob. 76RCh. 21 - Prob. 77RCh. 21 - Prob. 78RCh. 21 - Prob. 79RCh. 21 - Prob. 80RCh. 21 - Prob. 1GRTCh. 21 - Prob. 2GRTCh. 21 - Prob. 3GRTCh. 21 - Prob. 4GRTCh. 21 - Prob. 5GRTCh. 21 - Prob. 6GRTCh. 21 - Prob. 7GRTCh. 21 - Prob. 8GRTCh. 21 - Prob. 9GRTCh. 21 - Prob. 10GRTCh. 21 - Prob. 1TCh. 21 - Prob. 2TCh. 21 - Prob. 3TCh. 21 - Prob. 4TCh. 21 - Prob. 5TCh. 21 - Prob. 6TCh. 21 - Prob. 7TCh. 21 - Prob. 8TCh. 21 - Prob. 9TCh. 21 - Prob. 10TCh. 21 - Prob. 11TCh. 21 - Prob. 12TCh. 21 - Prob. 13TCh. 21 - Prob. 14TCh. 21 - Prob. 15TCh. 21 - Prob. 16TCh. 21 - Prob. 17TCh. 21 - Prob. 18TCh. 21 - Prob. 1CRCh. 21 - Prob. 2CRCh. 21 - Prob. 3CRCh. 21 - Prob. 4CRCh. 21 - Prob. 5CRCh. 21 - Prob. 6CRCh. 21 - Prob. 7CRCh. 21 - Prob. 8CRCh. 21 - Prob. 9CRCh. 21 - Prob. 10CRCh. 21 - Prob. 11CRCh. 21 - Prob. 12CRCh. 21 - Prob. 13CRCh. 21 - Prob. 14CRCh. 21 - Prob. 15CRCh. 21 - Prob. 16CRCh. 21 - Prob. 17CRCh. 21 - Prob. 18CRCh. 21 - Prob. 19CRCh. 21 - Prob. 20CRCh. 21 - Prob. 21CRCh. 21 - Prob. 22CRCh. 21 - Prob. 23CRCh. 21 - Prob. 24CRCh. 21 - Prob. 25CRCh. 21 - Prob. 26CRCh. 21 - Prob. 27CRCh. 21 - Prob. 28CRCh. 21 - Prob. 29CRCh. 21 - Prob. 30CRCh. 21 - Prob. 31CRCh. 21 - Prob. 32CRCh. 21 - Prob. 33CRCh. 21 - Prob. 34CRCh. 21 - Prob. 35CRCh. 21 - Prob. 36CRCh. 21 - Prob. 37CRCh. 21 - Prob. 38CRCh. 21 - Prob. 39CRCh. 21 - Prob. 40CRCh. 21 - Prob. 41CRCh. 21 - Prob. 42CRCh. 21 - Prob. 43CRCh. 21 - Prob. 44CRCh. 21 - Prob. 45CRCh. 21 - Prob. 46CRCh. 21 - Prob. 47CRCh. 21 - Prob. 48CRCh. 21 - Prob. 49CRCh. 21 - Prob. 50CR
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