Linear Algebra with Applications (2-Download)
5th Edition
ISBN: 9780321796974
Author: Otto Bretscher
Publisher: PEARSON
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Textbook Question
Chapter 9.2, Problem 11E
Do parts a and d of Exercise 10 for a quadratic form of n variables.
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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?
Chapter 9 Solutions
Linear Algebra with Applications (2-Download)
Ch. 9.1 - Solve the initial value problems posed in...Ch. 9.1 - Solve the initial value problems posed in...Ch. 9.1 - Solve the initial value problems posed in...Ch. 9.1 - Solve the initial value problems posed in...Ch. 9.1 - Solve the initial value problems posed in...Ch. 9.1 - Solve the nonlinear differential equations in...Ch. 9.1 - Solve the nonlinear differential equations in...Ch. 9.1 - Solve the nonlinear differential equations in...Ch. 9.1 - Solve the nonlinear differential equations in...Ch. 9.1 - Solve the nonlinear differential equations in...
Ch. 9.1 - Solve the nonlinear differential equations in...Ch. 9.1 - Find a differential equation of the form dx/dt=kx...Ch. 9.1 - In 1778, a wealthy Pennsylvanian merchant named...Ch. 9.1 - The carbon in living matter contains a minute...Ch. 9.1 - Justify the “Rule of 69”: If a quantity grows at a...Ch. 9.1 - For the values of1and2given in Exercises 16...Ch. 9.1 - For the values of1and2given in Exercises 16...Ch. 9.1 - For the values of1and2given in Exercises 16...Ch. 9.1 - For the values of1and2given in Exercises 16...Ch. 9.1 - Consider the system dx/dt=Axwith A=[0110] . Sketch...Ch. 9.1 - Consider the system dx/dt=Axwith A=[0100] . Sketch...Ch. 9.1 - Consider the linear system dx/dt=Ax of arbitrary...Ch. 9.1 - Consider the linear system dx/dt=Ax of arbitrary...Ch. 9.1 - Let A be an nn matrix and k a scalar. Consider the...Ch. 9.1 - Let A be an nn matrix and k a scalar. Consider the...Ch. 9.1 - In Exercises 26 through 31, solve the system with...Ch. 9.1 - In Exercises 26 through 31, solve the system with...Ch. 9.1 - In Exercises 26 through 31, solve the system with...Ch. 9.1 - In Exercises 26 through 31, solve the system with...Ch. 9.1 - In Exercises 26 through 31, solve the system with...Ch. 9.1 - In Exercises 26 through 31, solve the system with...Ch. 9.1 - Sketch rough phase portraits for the dynamical...Ch. 9.1 - Sketch rough phase portraits for the dynamical...Ch. 9.1 - Sketch rough phase portraits for the dynamical...Ch. 9.1 - Sketch rough phase portraits for the dynamical...Ch. 9.1 - Sketch rough phase portraits for the dynamical...Ch. 9.1 - Sketch rough phase portraits for the dynamical...Ch. 9.1 - Sketch rough phase portraits for the dynamical...Ch. 9.1 - Sketch rough phase portraits for the dynamical...Ch. 9.1 - Find a 22 matrix A such that the system dx/dt=Ax...Ch. 9.1 - Consider a noninvertible 22 matrix A with two...Ch. 9.1 - Consider the interaction of two species of animals...Ch. 9.1 - Answer the questions posed in Exercise 42 for the...Ch. 9.1 - Answer the questions posed in Exercise 42 for the...Ch. 9.1 - Two herds of vicious animals are fighting each...Ch. 9.1 - Repeat Exercise 45 for the system | dx dt=py dy...Ch. 9.1 - The interaction of two populations of animals is...Ch. 9.1 - Repeat Exercise 47 for the system | dx dt=x+ky dy...Ch. 9.1 - Here is a continuous model of a person’s glucose...Ch. 9.1 - Consider a linear system dx/dt=Ax , where A is a...Ch. 9.1 - Let x(t) be a differentiable curve in n and S an...Ch. 9.1 - Find all solutions of the system dxdt=|10|x where ...Ch. 9.1 - Solve the initial value problem dxdt=|pqqp|x with...Ch. 9.1 - Consider a door that opens to only one side (as...Ch. 9.1 - Answer the questions posed in Exercise 54 for the...Ch. 9.2 - Use the definition of the complexvalued...Ch. 9.2 - Use the definition of the complexvalued...Ch. 9.2 - Use the definition of the complexvalued...Ch. 9.2 - Sketch the trajectory of the complexvalued...Ch. 9.2 - Sketch the trajectory of the complexvalued...Ch. 9.2 - Find all complex solutions of the system...Ch. 9.2 - Determine the stability of the system dxdt=[1234]xCh. 9.2 - Consider a sytem dxdt=Ax where A is a symmetric...Ch. 9.2 - Consider a sytem dxdt=Ax where A is a 22 matrix...Ch. 9.2 - Consider a quadratic form q(x)=xAx of two...Ch. 9.2 - Do parts a and d of Exercise 10 for a quadratic...Ch. 9.2 - Determine the stability of the system...Ch. 9.2 - If the system dx/dt=Ax is stable, is dx/dt=A1x...Ch. 9.2 - NegativeFeedbackLoops. Suppose some quantities...Ch. 9.2 - Consider a noninvertible 22 matrix A with a...Ch. 9.2 - Consider the system dxdt=[01ab]x where a and b are...Ch. 9.2 - Consider the system dxdt=[0kk1]x where k is an...Ch. 9.2 - Consider a diagonalizable 33 matrix A such that...Ch. 9.2 - True or False? If the trace and the determinant of...Ch. 9.2 - Consider a 22 matrix A with eigenvalues i . Let +i...Ch. 9.2 - Ngozi opens a bank account with an initial balance...Ch. 9.2 - Find each of the linear systems in Exercises 22...Ch. 9.2 - Find each of the linear systems in Exercises 22...Ch. 9.2 - Find each of the linear systems in Exercises 22...Ch. 9.2 - Find each of the linear systems in Exercises 22...Ch. 9.2 - Prob. 26ECh. 9.2 - Prob. 27ECh. 9.2 - Prob. 28ECh. 9.2 - Prob. 29ECh. 9.2 - Prob. 30ECh. 9.2 - Prob. 31ECh. 9.2 - Prob. 32ECh. 9.2 - Prob. 33ECh. 9.2 - Prob. 34ECh. 9.2 - Prob. 35ECh. 9.2 - Prob. 36ECh. 9.2 - Prob. 37ECh. 9.2 - Prob. 38ECh. 9.2 - Prob. 39ECh. 9.2 - Prob. 40ECh. 9.3 - Find all real solutions of the differential...Ch. 9.3 - Prob. 2ECh. 9.3 - Prob. 3ECh. 9.3 - Prob. 4ECh. 9.3 - Prob. 5ECh. 9.3 - Prob. 6ECh. 9.3 - Prob. 7ECh. 9.3 - Prob. 8ECh. 9.3 - Prob. 9ECh. 9.3 - Prob. 10ECh. 9.3 - Prob. 11ECh. 9.3 - Prob. 12ECh. 9.3 - Find all real solutions of the differential...Ch. 9.3 - Prob. 14ECh. 9.3 - Prob. 15ECh. 9.3 - Prob. 16ECh. 9.3 - Prob. 17ECh. 9.3 - Prob. 18ECh. 9.3 - Prob. 19ECh. 9.3 - Prob. 20ECh. 9.3 - Prob. 21ECh. 9.3 - Prob. 22ECh. 9.3 - Prob. 23ECh. 9.3 - Prob. 24ECh. 9.3 - Prob. 25ECh. 9.3 - Prob. 26ECh. 9.3 - Prob. 27ECh. 9.3 - Prob. 28ECh. 9.3 - Prob. 29ECh. 9.3 - Prob. 30ECh. 9.3 - Prob. 31ECh. 9.3 - Prob. 32ECh. 9.3 - Prob. 33ECh. 9.3 - Prob. 34ECh. 9.3 - Prob. 35ECh. 9.3 - Prob. 36ECh. 9.3 - Prob. 37ECh. 9.3 - Prob. 38ECh. 9.3 - Prob. 39ECh. 9.3 - Prob. 40ECh. 9.3 - Prob. 41ECh. 9.3 - Prob. 42ECh. 9.3 - Prob. 43ECh. 9.3 - The displacement of a certain forced oscillator...Ch. 9.3 - Prob. 45ECh. 9.3 - Prob. 46ECh. 9.3 - Prob. 47ECh. 9.3 - Prob. 48E
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