Elementary Linear Algebra
8th Edition
ISBN: 9780357156100
Author: Ron Larson
Publisher: Cengage Limited
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Chapter 1.1, Problem 42E
System of Linear Equations. In Exercises 37-56, solve the system of linear equations.
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In a volatile housing market, the overall value of a home can be modeled by V(x) = 415x² - 4600x + 200000, where V represents the value of the home and x represents each year after 2020.
Part A: Find the vertex of V(x). Show all work.
Part B: Interpret what the vertex means in terms of the value of the home.
Show all work to solve 3x² + 5x - 2 = 0.
Two functions are given below: f(x) and h(x). State the axis of symmetry for each function and explain how to find it.
f(x)
h(x)
21
5
4+
3
f(x) = −2(x − 4)² +2
+
-5 -4-3-2-1
1
2
3
4
5
-1
-2
-3
5
Chapter 1 Solutions
Elementary Linear Algebra
Ch. 1.1 - Linear Equations. In Exercises 1-6, determine...Ch. 1.1 - Linear Equations. In Exercises 1-6, determine...Ch. 1.1 - Linear Equations. In Exercises 1-6, determine...Ch. 1.1 - Linear Equations. In Exercises 1-6, determine...Ch. 1.1 - Linear Equations. In Exercises 1-6, determine...Ch. 1.1 - Linear Equations. In Exercises 1-6, determine...Ch. 1.1 - Parametric Representation. In Exercises 7-10, find...Ch. 1.1 - Parametric Representation. In Exercises 7-10, find...Ch. 1.1 - Parametric Representation. In Exercises 7-10, find...Ch. 1.1 - Parametric Representation. In Exercises 7-10, find...
Ch. 1.1 - Graphing Analysis. In Exercises 11-24, graph the...Ch. 1.1 - Graphing Analysis. In Exercises 11-24, graph the...Ch. 1.1 - Graphing Analysis. In Exercises 11-24, graph the...Ch. 1.1 - Graphing Analysis. In Exercises 11-24, graph the...Ch. 1.1 - Graphing Analysis. In Exercises 11-24, graph the...Ch. 1.1 - Graphing Analysis. In Exercises 11-24, graph the...Ch. 1.1 - Graphing Analysis. In Exercises 11-24, graph the...Ch. 1.1 - Graphing Analysis. In Exercises 11-24, graph the...Ch. 1.1 - Graphing Analysis. In Exercises 11-24, graph the...Ch. 1.1 - Graphing Analysis. In Exercises 11-24, graph the...Ch. 1.1 - Graphing Analysis. In Exercises 11-24, graph the...Ch. 1.1 - Prob. 22ECh. 1.1 - Prob. 23ECh. 1.1 - Graphing Analysis. In Exercises 11-24, graph the...Ch. 1.1 - Back-Substitution. In Exercises 25-30, use...Ch. 1.1 - Back-Substitution. In Exercises 25-30, use...Ch. 1.1 - Back-Substitution. In Exercises 25-30, use...Ch. 1.1 - Back-Substitution. In Exercises 25-30, use...Ch. 1.1 - Back-Substitution. In Exercises 25-30, use...Ch. 1.1 - Back-Substitution. In Exercises 25-30, use...Ch. 1.1 - Prob. 31ECh. 1.1 - Graphical Analysis. In Exercises 31-36, complete...Ch. 1.1 - Graphical Analysis. In Exercises 31-36, complete...Ch. 1.1 - Prob. 34ECh. 1.1 - Prob. 35ECh. 1.1 - Graphical Analysis. In Exercises 31-36, complete...Ch. 1.1 - System of Linear Equations. In Exercises 37-56,...Ch. 1.1 - Prob. 38ECh. 1.1 - System of Linear Equations. In Exercises 37-56,...Ch. 1.1 - Prob. 40ECh. 1.1 - System of Linear Equations. In Exercises 37-56,...Ch. 1.1 - System of Linear Equations. In Exercises 37-56,...Ch. 1.1 - Prob. 43ECh. 1.1 - System of Linear Equations. In Exercises 37-56,...Ch. 1.1 - System of Linear Equations. In Exercises 37-56,...Ch. 1.1 - System of Linear Equations. In Exercises 37-56,...Ch. 1.1 - System of Linear Equations. In Exercises 37-56,...Ch. 1.1 - System of Linear Equations. In Exercises 37-56,...Ch. 1.1 - System of Linear Equations. In Exercises 37-56,...Ch. 1.1 - System of Linear Equations. In Exercises 37-56,...Ch. 1.1 - System of Linear Equations. In Exercises 37-56,...Ch. 1.1 - System of Linear Equations. In Exercises 37-56,...Ch. 1.1 - System of Linear Equations. In Exercises 37-56,...Ch. 1.1 - System of Linear Equations. In Exercises 37-56,...Ch. 1.1 - System of Linear Equations. In Exercises 37-56,...Ch. 1.1 - System of Linear Equations. In Exercises 37-56,...Ch. 1.1 - System of Linear Equations. In Exercises 57-62,...Ch. 1.1 - System of Linear Equations. In Exercises 57-62,...Ch. 1.1 - System of Linear Equations. In Exercises 57-62,...Ch. 1.1 - System of Linear Equations. In Exercises 57-62,...Ch. 1.1 - System of Linear Equations. In Exercises 57-62,...Ch. 1.1 - System of Linear Equations. In Exercises 57-62,...Ch. 1.1 - Number of Solutions. In Exercises 63-66, state why...Ch. 1.1 - Number of Solutions. In Exercises 63-66, state why...Ch. 1.1 - Number of Solutions. In Exercises 63-66, state why...Ch. 1.1 - Number of Solutions. In Exercises 63-66, state why...Ch. 1.1 - Nutrition One eight-ounce glass of apple juice and...Ch. 1.1 - Airplane Speed Two planes start from Los Angeles...Ch. 1.1 - True or False? In Exercises 69 and 70, determine...Ch. 1.1 - True or False? In Exercises 69 and 70, determine...Ch. 1.1 - Find a system of two equations in two variables,...Ch. 1.1 - Find a system of two equations in three variables,...Ch. 1.1 - Substitution In Exercises 73-76, solve the system...Ch. 1.1 - Substitution In Exercises 73-76, solve the system...Ch. 1.1 - Prob. 75ECh. 1.1 - Substitution In Exercises 73-76, solve the system...Ch. 1.1 - Prob. 77ECh. 1.1 - Trigonometric Coefficients In Exercises 77 and 78,...Ch. 1.1 - Coefficient Design In Exercises 79-84, determine...Ch. 1.1 - Coefficient Design In Exercises 79-84, determine...Ch. 1.1 - Coefficient Design In Exercises 79-84, determine...Ch. 1.1 - Coefficient Design In Exercises 79-84, determine...Ch. 1.1 - Prob. 83ECh. 1.1 - Coefficient Design In Exercises 79-84, determine...Ch. 1.1 - Determine the values of k such that the system of...Ch. 1.1 - CAPSTONE Find values of a, b, and c such that the...Ch. 1.1 - Writing Consider the system of linear equations in...Ch. 1.1 - Writing Explain why the system of linear equations...Ch. 1.1 - Show that if ax2+bx+c=0 for all x, then a=b=c=0.Ch. 1.1 - Consider the system of linear equations in x and...Ch. 1.1 - Discovery In Exercises 91 and 92, sketch the lines...Ch. 1.1 - Discovery In Exercises 91 and 92, sketch the lines...Ch. 1.1 - Prob. 93ECh. 1.1 - Writing In Exercises 93 and 94, the graphs of the...Ch. 1.2 - Matrix sizeIn Exercises 1-6, determine the size of...Ch. 1.2 - Matrix sizeIn Exercises 1-6, determine the size of...Ch. 1.2 - Matrix sizeIn Exercises 1-6, determine the size of...Ch. 1.2 - Prob. 4ECh. 1.2 - Matrix sizeIn Exercises 1-6, determine the size of...Ch. 1.2 - Prob. 6ECh. 1.2 - Elementary Row Operations In Exercises 7-10,...Ch. 1.2 - Elementary Row Operations In Exercises 7-10,...Ch. 1.2 - Elementary Row Operations In Exercises 7-10,...Ch. 1.2 - Elementary Row Operations In Exercises 7-10,...Ch. 1.2 - Augmented Matrix In Exercises 11-18, find the...Ch. 1.2 - Augmented Matrix In Exercises 11-18, find the...Ch. 1.2 - Augmented Matrix In Exercises 11-18, find the...Ch. 1.2 - Augmented Matrix In Exercises 11-18, find the...Ch. 1.2 - Augmented Matrix In Exercises 11-18, find the...Ch. 1.2 - Augmented Matrix In Exercises 11-18, find the...Ch. 1.2 - Augmented Matrix In Exercises 11-18, find the...Ch. 1.2 - Augmented Matrix In Exercises 11-18, find the...Ch. 1.2 - Row-Echelon Form In Exercises 19-24, determine...Ch. 1.2 - Row-Echelon Form In Exercises 19-24, determine...Ch. 1.2 - Row-Echelon Form In Exercises 19-24, determine...Ch. 1.2 - Row-Echelon Form In Exercises 19-24, determine...Ch. 1.2 - Row-Echelon Form In Exercises 19-24, determine...Ch. 1.2 - Row-Echelon Form In Exercises 19-24, determine...Ch. 1.2 - System of Linear Equations In Exercises 25-38,...Ch. 1.2 - System of Linear Equations In Exercises 25-38,...Ch. 1.2 - System of Linear Equations In Exercises 25-38,...Ch. 1.2 - System of Linear Equations In Exercises 25-38,...Ch. 1.2 - System of Linear Equations In Exercises 25-38,...Ch. 1.2 - System of Linear Equations In Exercises 25-38,...Ch. 1.2 - System of Linear Equations In Exercises 25-38,...Ch. 1.2 - System of Linear Equations In Exercises 25-38,...Ch. 1.2 - System of Linear Equations In Exercises 25-38,...Ch. 1.2 - System of Linear Equations In Exercises 25-38,...Ch. 1.2 - System of Linear Equations In Exercises 25-38,...Ch. 1.2 - Prob. 36ECh. 1.2 - System of Linear Equations In Exercises 25-38,...Ch. 1.2 - System of Linear Equations In Exercises 25-38,...Ch. 1.2 - Prob. 39ECh. 1.2 - Prob. 40ECh. 1.2 - Prob. 41ECh. 1.2 - System of Linear Equations In Exercises 39-42, use...Ch. 1.2 - Homogeneous System In Exercises 43-46, solve the...Ch. 1.2 - Homogeneous System In Exercises 43-46, solve the...Ch. 1.2 - Homogeneous System In Exercises 43-46, solve the...Ch. 1.2 - Homogeneous System In Exercises 43-46, solve the...Ch. 1.2 - Prob. 47ECh. 1.2 - Prob. 48ECh. 1.2 - Matrix Representation In Exercises 49 and 50,...Ch. 1.2 - Matrix Representation In Exercises 49 and 50,...Ch. 1.2 - Coefficient Design In Exercises 51 and 52, find...Ch. 1.2 - Coefficient Design In Exercises 51 and 52, find...Ch. 1.2 - Prob. 53ECh. 1.2 - Prob. 54ECh. 1.2 - Prob. 55ECh. 1.2 - Prob. 56ECh. 1.2 - Prob. 57ECh. 1.2 - Prob. 58ECh. 1.2 - True or False? In Exercises 59 and 60, determine...Ch. 1.2 - Prob. 60ECh. 1.2 - Prob. 61ECh. 1.2 - Prob. 62ECh. 1.2 - Prob. 63ECh. 1.2 - Row Equivalence In Exercises 63 and 64, determine...Ch. 1.2 - Homogeneous System In Exercises 65 and 66, find...Ch. 1.2 - Prob. 66ECh. 1.2 - Prob. 67ECh. 1.2 - CAPSTONE In your own words, describe the...Ch. 1.2 - Prob. 69ECh. 1.2 - Prob. 70ECh. 1.3 - Polynomial Curve Fitting In Exercises 1-12,a...Ch. 1.3 - Polynomial Curve Fitting In Exercises 1-12,a...Ch. 1.3 - Prob. 3ECh. 1.3 - Polynomial Curve Fitting In Exercises 1-12,a...Ch. 1.3 - Polynomial Curve Fitting In Exercises 1-12,a...Ch. 1.3 - Prob. 6ECh. 1.3 - Prob. 7ECh. 1.3 - Prob. 8ECh. 1.3 - Polynomial Curve Fitting In Exercises 1-12,a...Ch. 1.3 - Prob. 10ECh. 1.3 - Prob. 11ECh. 1.3 - Polynomial Curve Fitting In Exercises 1-12,a...Ch. 1.3 - Use sin0=0, sin2=1, and sin=0 to estimate sin3.Ch. 1.3 - Use log21=0,log22=1, and log24=2 to estimate...Ch. 1.3 - Prob. 15ECh. 1.3 - Prob. 16ECh. 1.3 - Prob. 17ECh. 1.3 - Population The table shows the U.S. populations...Ch. 1.3 - Prob. 19ECh. 1.3 - Prob. 20ECh. 1.3 - Network Analysis The figure shows the flow of...Ch. 1.3 - Network Analysis The figure shows the flow of...Ch. 1.3 - Network Analysis The figure shows the flow of...Ch. 1.3 - Network Analysis Water is flowing through a...Ch. 1.3 - Prob. 25ECh. 1.3 - Prob. 26ECh. 1.3 - Prob. 27ECh. 1.3 - Prob. 28ECh. 1.3 - Temperature In Exercises 29 and 30, the figure...Ch. 1.3 - Temperature In Exercises 29 and 30, the figure...Ch. 1.3 - Partial Fraction Decomposition In Exercises 3134,...Ch. 1.3 - Partial Fraction Decomposition In Exercises 3134,...Ch. 1.3 - Prob. 33ECh. 1.3 - Prob. 34ECh. 1.3 - Calculus In Exercises 35 and 36, find the values...Ch. 1.3 - Prob. 36ECh. 1.3 - Calculus The graph of a parabola passes through...Ch. 1.3 - Calculus The graph of a cubic polynomial function...Ch. 1.3 - Prob. 39ECh. 1.3 - Prob. 40ECh. 1.3 - Prob. 41ECh. 1.3 - Prob. 42ECh. 1.CR - Linear Equations In Exercises 1-6, determine...Ch. 1.CR - Linear Equations In Exercises 1-6, determine...Ch. 1.CR - Prob. 3CRCh. 1.CR - Prob. 4CRCh. 1.CR - Prob. 5CRCh. 1.CR - Prob. 6CRCh. 1.CR - Prob. 7CRCh. 1.CR - Parametric Representation In Exercises 7 and 8,...Ch. 1.CR - Prob. 9CRCh. 1.CR - Prob. 10CRCh. 1.CR - Prob. 11CRCh. 1.CR - System of Linear Equations In Exercises 9-20,...Ch. 1.CR - Prob. 13CRCh. 1.CR - Prob. 14CRCh. 1.CR - Prob. 15CRCh. 1.CR - System of Linear Equations In Exercises 9-20,...Ch. 1.CR - Prob. 17CRCh. 1.CR - Prob. 18CRCh. 1.CR - Prob. 19CRCh. 1.CR - Prob. 20CRCh. 1.CR - Prob. 21CRCh. 1.CR - Prob. 22CRCh. 1.CR - Prob. 23CRCh. 1.CR - Prob. 24CRCh. 1.CR - Prob. 25CRCh. 1.CR - Prob. 26CRCh. 1.CR - Prob. 27CRCh. 1.CR - Prob. 28CRCh. 1.CR - Prob. 29CRCh. 1.CR - Prob. 30CRCh. 1.CR - Prob. 31CRCh. 1.CR - Prob. 32CRCh. 1.CR - Prob. 33CRCh. 1.CR - Prob. 34CRCh. 1.CR - Prob. 35CRCh. 1.CR - System of Linear Equations In Exercises 31-40,...Ch. 1.CR - Prob. 37CRCh. 1.CR - System of Linear Equations In Exercises 31-40,...Ch. 1.CR - Prob. 39CRCh. 1.CR - Prob. 40CRCh. 1.CR - Prob. 41CRCh. 1.CR - Prob. 42CRCh. 1.CR - Prob. 43CRCh. 1.CR - Prob. 44CRCh. 1.CR - Prob. 45CRCh. 1.CR - Prob. 46CRCh. 1.CR - Homogeneous System In Exercises 47-50, solve the...Ch. 1.CR - Prob. 48CRCh. 1.CR - Prob. 49CRCh. 1.CR - Prob. 50CRCh. 1.CR - Prob. 51CRCh. 1.CR - Prob. 52CRCh. 1.CR - Prob. 53CRCh. 1.CR - Find if possible values of a,b, and c such that...Ch. 1.CR - Prob. 55CRCh. 1.CR - Prob. 56CRCh. 1.CR - Prob. 57CRCh. 1.CR - Find all values of for which the homogeneous...Ch. 1.CR - Prob. 59CRCh. 1.CR - Prob. 60CRCh. 1.CR - Sports In Super Bowl I, on January 15, 1967, the...Ch. 1.CR - Agriculture A mixture of 6 gallons of chemical A,...Ch. 1.CR - Prob. 63CRCh. 1.CR - Prob. 64CRCh. 1.CR - Prob. 65CRCh. 1.CR - Prob. 66CRCh. 1.CR - Prob. 67CRCh. 1.CR - Prob. 68CRCh. 1.CR - Prob. 69CRCh. 1.CR - Prob. 70CRCh. 1.CR - Prob. 71CRCh. 1.CR - Network Analysis Determine the currents I1,I2, and...
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