Homework Answers
Suppose 7' = AT, where A is the 2 x 2 matrix below. A= (1 1...
Suppose 7' = AT, where A is the 2 x 2 matrix below. A= (1 1 1 3 (a) Determine the eigenvalues and eigenvectors of A. (b) Express the general solution of t' = Az in terms of real valued functions. (c) Sketch the phase portrait of the system. Do not forget to label your axes.
Consider the 2-dimensional system of linear equations -2 X' = 2 Note that the coefficient matrix...
Consider the 2-dimensional system of linear equations -2 X' = 2 Note that the coefficient matrix for this system contains a parameter a. (a) Determine the eigenvalues of the system in terms of a (b) The qualitative behavior of the solutions depends value ao where the qualitative behavior changes. Classify the equilibrium point of the system (by type and stability) when a < ao, when a = a), and when a > ao. on the value of a. Determine a...
Consider the linear system of first order differential equations x' = Ax, where x = x(t),...
Consider the linear system of first order differential equations x' = Ax, where x = x(t), t > 0, and A has the eigenvalues and eigenvectors below. Sketch the phase portrait. Please label your axes. 11 = 5, V1 = 12 = 2, V2 = ()
Consider the following coefficient matrix, which contains a parameter a. 11 6 (a) Determine the e...
Consider the following coefficient matrix, which contains a parameter a. 11 6 (a) Determine the eigenvalues in terms of α. Supposing that α > 0, enter your answers in increasing order. Equation Editor Common Ω Matrix 自0 tania) sin(a) d a 4 secia) esia)a) costa) 邇 alal sin"(a) cos-1(a) tan-"(a)- u oo Ω Matrix cosa) tana) ,..tseela, osia, =a) Va ya lal sin-(a)(a) tan ( o sinia) sec(α) //u),dx ! 읊 cscla) (b) Find the critical value or values of...
Consider the nonlinear System of differential equations di dt dt (a) Determine all critical points of the system (b) For each critical point with nonnegative x value (20) i. Determine the linearised...
Consider the nonlinear System of differential equations di dt dt (a) Determine all critical points of the system (b) For each critical point with nonnegative x value (20) i. Determine the linearised system and discuss whether it can be used to approximate the ii. For each critical point where the approximation is valid, determine the general solution of iii. Sketch by hand the phase portrait of each linearised system where the approximation behaviour of the non-linear system the linearised system...
1. (20 marks) This question is about the system of differential equations Y. dt=(k 1 (a) Consider the case k = 0. i...
1. (20 marks) This question is about the system of differential equations Y. dt=(k 1 (a) Consider the case k = 0. i. Determine the type of equilibrium at (0,0) (e.g., sink, spiral source). ii. Write down the general solution. iii. Sketch a phase portrait for the system. (b) Now consider the case k3 In this case, the matrix has an eigenvalue 2+V/2 with eigenvector i. -1+iv2 and an eigenvalue 2 iv2 with eigenvector . Determine the type of equilibrium...
1. (This is problem 5 from the second assignment sheet, reprinted here.) Consider the nonlinear system a. Sketch the ulllines and indicate in your sketch the direction of the vector field in each...
1. (This is problem 5 from the second assignment sheet, reprinted here.) Consider the nonlinear system a. Sketch the ulllines and indicate in your sketch the direction of the vector field in each of the regions b. Linearize the system around the equilibrium point, and use your result to classify the type of the c. Use the information from parts a and b to sketch the phase portrait of the system. 2. Sketch the phase portraits for the following systems...
1. (20 marks) This question is about the system of differential equations dY (3 1 (a) Consider the case k 0 i. Dete...
1. (20 marks) This question is about the system of differential equations dY (3 1 (a) Consider the case k 0 i. Determine the type of equilibrium at (0,0) (e.g., sink, spiral source). i. Write down the general solution. ili Sketch a phase portrait for the system. (b) Now consider the case k -3. (-1+iv ) i. In this case, the matrix has an eigenvalue 2+i/2 with eigenvector and an eigenvalue 2-W2 with eigenvector Determine the type of equilibrium at...
For the system transfer function given by: s +10 $2 x (82100.+10) 1. Identify each term in the tr...
For the system transfer function given by: s +10 $2 x (82100.+10) 1. Identify each term in the transfer function (constant, poles, zeros) (a) For any constant terms, what is the dB magnitude? What is the phase angle? (b) For any real poles not at the origin, what is the break frequency? (c) For any real zeros not at the origin, what is the break frequency? 2. Give the value of the DB magnitude and phase angle at w =...
A thin rod of radius r, length 3L, and thermal conductivity, k is divided into three...
A thin rod of radius r, length 3L, and thermal conductivity, k is divided into three regions, each of length L. Regions 1 and 2 are surrounded by a perfectly insulating wall, while Region 3 protrudes into ambient air well-insulated. Uniform heat generation, q, occus only in Region 1 Sketch the temperature prolile along the entire length of the rod. For each region, specify why the temperature prolile has the shape you have decided on. Also, specify the nature of...
Suppose 7' = AT, where A is the 2 x 2 matrix below. A= (1 1 1 3 (a) Determine the eigenvalues and eigenvectors of A. (b) Express the general solution of t' = Az in terms of real valued functions. (c) Sketch the phase portrait of the system. Do not forget to label your axes.
Consider the 2-dimensional system of linear equations -2 X' = 2 Note that the coefficient matrix for this system contains a parameter a. (a) Determine the eigenvalues of the system in terms of a (b) The qualitative behavior of the solutions depends value ao where the qualitative behavior changes. Classify the equilibrium point of the system (by type and stability) when a < ao, when a = a), and when a > ao. on the value of a. Determine a...
Consider the linear system of first order differential equations x' = Ax, where x = x(t), t > 0, and A has the eigenvalues and eigenvectors below. Sketch the phase portrait. Please label your axes. 11 = 5, V1 = 12 = 2, V2 = ()
Consider the following coefficient matrix, which contains a parameter a. 11 6 (a) Determine the eigenvalues in terms of α. Supposing that α > 0, enter your answers in increasing order. Equation Editor Common Ω Matrix 自0 tania) sin(a) d a 4 secia) esia)a) costa) 邇 alal sin"(a) cos-1(a) tan-"(a)- u oo Ω Matrix cosa) tana) ,..tseela, osia, =a) Va ya lal sin-(a)(a) tan ( o sinia) sec(α) //u),dx ! 읊 cscla) (b) Find the critical value or values of...
Consider the nonlinear System of differential equations di dt dt (a) Determine all critical points of the system (b) For each critical point with nonnegative x value (20) i. Determine the linearised system and discuss whether it can be used to approximate the ii. For each critical point where the approximation is valid, determine the general solution of iii. Sketch by hand the phase portrait of each linearised system where the approximation behaviour of the non-linear system the linearised system...
1. (20 marks) This question is about the system of differential equations Y. dt=(k 1 (a) Consider the case k = 0. i. Determine the type of equilibrium at (0,0) (e.g., sink, spiral source). ii. Write down the general solution. iii. Sketch a phase portrait for the system. (b) Now consider the case k3 In this case, the matrix has an eigenvalue 2+V/2 with eigenvector i. -1+iv2 and an eigenvalue 2 iv2 with eigenvector . Determine the type of equilibrium...
1. (This is problem 5 from the second assignment sheet, reprinted here.) Consider the nonlinear system a. Sketch the ulllines and indicate in your sketch the direction of the vector field in each of the regions b. Linearize the system around the equilibrium point, and use your result to classify the type of the c. Use the information from parts a and b to sketch the phase portrait of the system. 2. Sketch the phase portraits for the following systems...
1. (20 marks) This question is about the system of differential equations dY (3 1 (a) Consider the case k 0 i. Determine the type of equilibrium at (0,0) (e.g., sink, spiral source). i. Write down the general solution. ili Sketch a phase portrait for the system. (b) Now consider the case k -3. (-1+iv ) i. In this case, the matrix has an eigenvalue 2+i/2 with eigenvector and an eigenvalue 2-W2 with eigenvector Determine the type of equilibrium at...
For the system transfer function given by: s +10 $2 x (82100.+10) 1. Identify each term in the transfer function (constant, poles, zeros) (a) For any constant terms, what is the dB magnitude? What is the phase angle? (b) For any real poles not at the origin, what is the break frequency? (c) For any real zeros not at the origin, what is the break frequency? 2. Give the value of the DB magnitude and phase angle at w =...
A thin rod of radius r, length 3L, and thermal conductivity, k is divided into three regions, each of length L. Regions 1 and 2 are surrounded by a perfectly insulating wall, while Region 3 protrudes into ambient air well-insulated. Uniform heat generation, q, occus only in Region 1 Sketch the temperature prolile along the entire length of the rod. For each region, specify why the temperature prolile has the shape you have decided on. Also, specify the nature of...
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