Differential Equations
4th Edition
ISBN: 9780495561989
Author: Paul Blanchard, Robert L. Devaney, Glen R. Hall
Publisher: Cengage Learning
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Chapter 3.4, Problem 6E
In Exercises 3-8, each linear system has complex eigenvalues. For each system,
(a) find the eigenvalues;
(b) determine if the origin is a spiral sink, a spiral source, or a center;
(c) determine the natural period and natural frequency of the oscillations,
(d) determine the direction of the oscillations in the phase plane (do the solutions go clockwise or counterclockwise around the origin?); and
(e) using HPGSystemSolver, sketch the x y -phase portrait and the
6.
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Chapter 3 Solutions
Differential Equations
Ch. 3.1 - Recall the model dx dt=ax+by dy dt=cx+dy for...Ch. 3.1 - In Exercises 57 , rewrite the specified linear...Ch. 3.1 - In Exercises 57 , rewrite the specified linear...Ch. 3.1 - In Exercises 57 , rewrite the specified linear...Ch. 3.1 - In Exercises 89 , rewrite the specified linear...Ch. 3.1 - For the linear systems given in Exercises 1013,...Ch. 3.1 - For the linear systems given in Exercises 1013,...Ch. 3.1 - Prob. 13ECh. 3.1 - Let A=(abcd) be a nonzero matrix. That is, suppose...Ch. 3.1 - The general form of a linear, homogeneous,...
Ch. 3.1 - Convert the third-order differential equation $...Ch. 3.1 - Consider the linear system dYdt=(2011)Y Show that...Ch. 3.1 - Consider the linear system dYdt=(1 113)Y (a)Show...Ch. 3.1 - A=( 2 33 2) Functions: Y1(t)=e2t(cos3t,sin3t)...Ch. 3.2 - In Exercises 110 (a) compute the eigenvalues; (b)...Ch. 3.2 - In Exercises 110 (a) compute the eigenvalues; (b)...Ch. 3.2 - In Exercises 110 (a) compute the eigenvalues; (b)...Ch. 3.2 - In Exercises 110 (a) compute the eigenvalues; (b)...Ch. 3.2 - In Exercises 110 (a) compute the eigenvalues; (b)...Ch. 3.2 - In Exercises 110 (a) compute the eigenvalues; (b)...Ch. 3.2 - In Exercises 110 (a) compute the eigenvalues; (b)...Ch. 3.2 - In Exercises $1-10$ (a) compute the eigenvalues;...Ch. 3.2 - Solve the initial-value problem dx dt=2x2y dy...Ch. 3.2 - Solve the initial-value problem dYdt=( 412...Ch. 3.2 - Show that a is the only eigenvalue and that every...Ch. 3.2 - A matrix of the form A=(ab0d) is called upper...Ch. 3.2 - A matrix of the form B=(abbd) is called symmetric....Ch. 3.2 - Consider the second-order equation...Ch. 3.2 - For the harmonic oscillator with mass m=1, spring...Ch. 3.2 - In Exercises 21-24, we return to Exercises 1-4 in...Ch. 3.3 - In Exercises 18, we refer to linear systems from...Ch. 3.3 - In Exercises 18, we refer to linear systems from...Ch. 3.3 - In Exercises 18, we refer to linear systems from...Ch. 3.3 - In Exercises 1-8, we refer to linear systems from...Ch. 3.3 - In Exercises 912, we refer to initial-value...Ch. 3.3 - In Exercises 13-16, we refer to the second-order...Ch. 3.3 - The slope field for the system dx dt=2x+12y dy...Ch. 3.3 - Consider the linear system dYdt=( 2102)Y $ (a)...Ch. 3.4 - Suppose that the 22 matrix A has =1+3i as an...Ch. 3.4 - Suppose that the 22 matrix B has =2+5i as an...Ch. 3.4 - In Exercises 3-8, each linear system has complex...Ch. 3.4 - In Exercises 3-8, each linear system has complex...Ch. 3.4 - In Exercises 3-8, each linear system has complex...Ch. 3.4 - In Exercises 3-8, each linear system has complex...Ch. 3.4 - In Exercises 3-8, each linear system has complex...Ch. 3.4 - In Exercises 9-14, the linear systems are the same...Ch. 3.4 - In Exercises 9-14, the linear systems are the same...Ch. 3.4 - In Exercises 9-14, the linear systems are the same...Ch. 3.5 - In Exercises 1-4, each of the linear systems has...Ch. 3.5 - In Exercises 5-8, the linear systems are the same...Ch. 3.5 - Given a quadratic 2++, what condition on and ...Ch. 3.6 - In Exercises 16, find the general solution (in...Ch. 3.6 - In Exercises 16, find the general solution (in...Ch. 3.6 - In Exercises 16, find the general solution (in...Ch. 3.6 - In Exercises 712, find the solution of the given...Ch. 3.6 - In Exercises 712, find the solution of the given...Ch. 3.6 - In Exercises 712, find the solution of the given...Ch. 3.6 - In Exercises 712 , find the solution of the given...Ch. 3.6 - In Exercises 1320, consider harmonic oscillators...Ch. 3.6 - In Exercises 13-20, consider harmonic oscillators...Ch. 3.6 - In Exercises 1320, consider harmonic oscillators...Ch. 3.7 - In Exercises 27 , we consider the one-parameter...Ch. 3.7 - In Exercises 2-7, we consider the one-parameter...
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