Consider a system of two nonlinear first-order ODEs, where x and y are functions of the independent variable t: 1 1 * = 2 tanh (x) - 2x cos(y) +e+3y-1, y = 3 cosh(x) - 3e²y + 29 y+sin(x). (a) Write down in matrix form of the type X = AX with X = (x, y) the system obtained by linearisation of the above equations around the point x = y = 0. Specify the elements of the matrix A. (b) Find the eigenvalues and eigenvectors of the matrix A obtained in (a). Write down the general solution of the linear system. (c) What type of fixed point is the equilibrium solution x = y = 0? Sketch the phase portrait of the linear system.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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all parts of possible since it is technically one question:)

15:59
(Cª
Û
Consider a system of two nonlinear first-order ODEs, where x and y are functions of the
independent variable t:
1
* = 2 tanh(x) — 2x cos(y) +²+³y-1, y = 3 cosh(x) − 3e+y+sin(x).
(a) Write down in matrix form of the type X = AX with X = (x, y) the system
obtained by linearisation of the above equations around the point x = y = 0.
Specify the elements of the matrix A.
(b) Find the eigenvalues and eigenvectors of the matrix A obtained in (a). Write
down the general solution of the linear system.
(c) What type of fixed point is the equilibrium solution x=y=0? Sketch the phase
portrait of the linear system.
(d) Find the solution of the linear system corresponding to the initial conditions
x(0) = 1, y(0) = 0. Determine the values limtox(t) and limt→∞ y(t).
อ
Transcribed Image Text:15:59 (Cª Û Consider a system of two nonlinear first-order ODEs, where x and y are functions of the independent variable t: 1 * = 2 tanh(x) — 2x cos(y) +²+³y-1, y = 3 cosh(x) − 3e+y+sin(x). (a) Write down in matrix form of the type X = AX with X = (x, y) the system obtained by linearisation of the above equations around the point x = y = 0. Specify the elements of the matrix A. (b) Find the eigenvalues and eigenvectors of the matrix A obtained in (a). Write down the general solution of the linear system. (c) What type of fixed point is the equilibrium solution x=y=0? Sketch the phase portrait of the linear system. (d) Find the solution of the linear system corresponding to the initial conditions x(0) = 1, y(0) = 0. Determine the values limtox(t) and limt→∞ y(t). อ
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