College Algebra with Modeling & Visualization (5th Edition)
5th Edition
ISBN: 9780321826138
Author: Gary K. Rockswold
Publisher: PEARSON
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Chapter R7, Problem 32E
To determine
the expression
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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
-e-f
-d
273
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 R7 Solutions
College Algebra with Modeling & Visualization (5th Edition)
Ch. R7 - Prob. 1ECh. R7 - Prob. 2ECh. R7 - Prob. 3ECh. R7 - Prob. 4ECh. R7 - Prob. 5ECh. R7 - Prob. 6ECh. R7 - Prob. 7ECh. R7 - Prob. 8ECh. R7 - Prob. 9ECh. R7 - Prob. 10E
Ch. R7 - Prob. 11ECh. R7 - Prob. 12ECh. R7 - Prob. 13ECh. R7 - Prob. 14ECh. R7 - Prob. 15ECh. R7 - Prob. 16ECh. R7 - Prob. 17ECh. R7 - Prob. 18ECh. R7 - Prob. 19ECh. R7 - Prob. 20ECh. R7 - Prob. 21ECh. R7 - Prob. 22ECh. R7 - Prob. 23ECh. R7 - Prob. 24ECh. R7 - Prob. 25ECh. R7 - Prob. 26ECh. R7 - Prob. 27ECh. R7 - Prob. 28ECh. R7 - Prob. 29ECh. R7 - Prob. 30ECh. R7 - Prob. 31ECh. R7 - Prob. 32ECh. R7 - Prob. 33ECh. R7 - Prob. 34ECh. R7 - Prob. 35ECh. R7 - Prob. 36ECh. R7 - Prob. 37ECh. R7 - Prob. 38ECh. R7 - Prob. 39ECh. R7 - Prob. 40ECh. R7 - Prob. 41ECh. R7 - Prob. 42ECh. R7 - Prob. 43ECh. R7 - Prob. 44ECh. R7 - Prob. 45ECh. R7 - Prob. 46ECh. R7 - Prob. 47ECh. R7 - Prob. 48ECh. R7 - Prob. 49ECh. R7 - Prob. 50ECh. R7 - Prob. 51ECh. R7 - Prob. 52ECh. R7 - Prob. 53ECh. R7 - Prob. 54ECh. R7 - Prob. 55ECh. R7 - Prob. 56ECh. R7 - Prob. 57ECh. R7 - Prob. 58ECh. R7 - Prob. 59ECh. R7 - Prob. 60ECh. R7 - Prob. 61ECh. R7 - Prob. 62ECh. R7 - Prob. 63ECh. R7 - Prob. 64ECh. R7 - Prob. 65ECh. R7 - Prob. 66ECh. R7 - Prob. 67ECh. R7 - Prob. 68ECh. R7 - Prob. 69ECh. R7 - Prob. 70ECh. R7 - Prob. 71ECh. R7 - Prob. 72ECh. R7 - Prob. 73ECh. R7 - Prob. 74ECh. R7 - Prob. 75ECh. R7 - Prob. 76ECh. R7 - Prob. 77ECh. R7 - Prob. 78ECh. R7 - Prob. 79ECh. R7 - Prob. 80ECh. R7 - Prob. 81ECh. R7 - Prob. 82ECh. R7 - Prob. 83ECh. R7 - Prob. 84ECh. R7 - Prob. 85ECh. R7 - Prob. 86ECh. R7 - Prob. 87ECh. R7 - Prob. 88ECh. R7 - Prob. 89ECh. R7 - Prob. 90ECh. R7 - Prob. 91ECh. R7 - Prob. 92ECh. R7 - Prob. 93ECh. R7 - Prob. 94ECh. R7 - Prob. 95ECh. R7 - Prob. 96ECh. R7 - Prob. 97ECh. R7 - Prob. 98ECh. R7 - Prob. 99ECh. R7 - Prob. 100ECh. R7 - Prob. 101ECh. R7 - Prob. 102ECh. R7 - Prob. 103ECh. R7 - Prob. 104ECh. R7 - Prob. 105ECh. R7 - Prob. 106ECh. R7 - Prob. 107ECh. R7 - Prob. 108ECh. R7 - Prob. 109ECh. R7 - Prob. 110ECh. R7 - Prob. 111ECh. R7 - Prob. 112E
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