Exam 6: Eigenvalues and Eigenvectors

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The matrix The matrix   is diagonalizable. is diagonalizable.

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Suppose that A is an Suppose that A is an   matrix and   is a solution to the system of linear differential equations   where   is an eigenvector of A with associated eigenvalue    . Let k be any scalar. Then   is a solution to the system    . matrix and Suppose that A is an   matrix and   is a solution to the system of linear differential equations   where   is an eigenvector of A with associated eigenvalue    . Let k be any scalar. Then   is a solution to the system    . is a solution to the system of linear differential equations Suppose that A is an   matrix and   is a solution to the system of linear differential equations   where   is an eigenvector of A with associated eigenvalue    . Let k be any scalar. Then   is a solution to the system    . where Suppose that A is an   matrix and   is a solution to the system of linear differential equations   where   is an eigenvector of A with associated eigenvalue    . Let k be any scalar. Then   is a solution to the system    . is an eigenvector of A with associated eigenvalue Suppose that A is an   matrix and   is a solution to the system of linear differential equations   where   is an eigenvector of A with associated eigenvalue    . Let k be any scalar. Then   is a solution to the system    . . Let k be any scalar. Then Suppose that A is an   matrix and   is a solution to the system of linear differential equations   where   is an eigenvector of A with associated eigenvalue    . Let k be any scalar. Then   is a solution to the system    . is a solution to the system Suppose that A is an   matrix and   is a solution to the system of linear differential equations   where   is an eigenvector of A with associated eigenvalue    . Let k be any scalar. Then   is a solution to the system    . .

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The Power Method applied to the matrix The Power Method applied to the matrix   and vector   converges. and vector The Power Method applied to the matrix   and vector   converges. converges.

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If If   is an eigenvalue of an invertible   matrix A, then   is an eigenvalue of the matrix    . is an eigenvalue of an invertible If   is an eigenvalue of an invertible   matrix A, then   is an eigenvalue of the matrix    . matrix A, then If   is an eigenvalue of an invertible   matrix A, then   is an eigenvalue of the matrix    . is an eigenvalue of the matrix If   is an eigenvalue of an invertible   matrix A, then   is an eigenvalue of the matrix    . .

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Factor the matrix Factor the matrix   from Question 1 in the form   where B is a rotation-dilation matrix. from Question 1 in the form Factor the matrix   from Question 1 in the form   where B is a rotation-dilation matrix. where B is a rotation-dilation matrix.

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If A is diagonalizable, then If A is diagonalizable, then   is diagonalizable. is diagonalizable.

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Find the characteristic polynomial, the eigenvalues, and a basis for each eigenspace for the matrix A = Find the characteristic polynomial, the eigenvalues, and a basis for each eigenspace for the matrix A =    . .

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Diagonalize the matrix A, if possible. Diagonalize the matrix A, if possible.

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Compute the first two iterations of the Shifted Inverse Power Method, starting with the given Compute the first two iterations of the Shifted Inverse Power Method, starting with the given   , to determine the eigenvalue of A closest to   , rounding any numerical values to two decimal places.   , to determine the eigenvalue of A closest to Compute the first two iterations of the Shifted Inverse Power Method, starting with the given   , to determine the eigenvalue of A closest to   , rounding any numerical values to two decimal places.   , rounding any numerical values to two decimal places. Compute the first two iterations of the Shifted Inverse Power Method, starting with the given   , to determine the eigenvalue of A closest to   , rounding any numerical values to two decimal places.

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If If   is the characteristic polynomial of an   matrix A, and   , then A is not invertible. is the characteristic polynomial of an If   is the characteristic polynomial of an   matrix A, and   , then A is not invertible. matrix A, and If   is the characteristic polynomial of an   matrix A, and   , then A is not invertible. , then A is not invertible.

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The coefficient matrix for a system of linear differential equations of the form The coefficient matrix for a system of linear differential equations of the form   has the given eigenvalues and eigenspace bases. Find the general solution for the system.   has the given eigenvalues and eigenspace bases. Find the general solution for the system. The coefficient matrix for a system of linear differential equations of the form   has the given eigenvalues and eigenspace bases. Find the general solution for the system.

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The Inverse Power Method applied to the matrix The Inverse Power Method applied to the matrix   and vector   converges. and vector The Inverse Power Method applied to the matrix   and vector   converges. converges.

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The coefficient matrix for a system of linear differential equations of the form The coefficient matrix for a system of linear differential equations of the form   has the given eigenvalues and eigenspace bases. Find the general solution for the system.   has the given eigenvalues and eigenspace bases. Find the general solution for the system. The coefficient matrix for a system of linear differential equations of the form   has the given eigenvalues and eigenspace bases. Find the general solution for the system.

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Find the matrix A that has the given eigenvalues and corresponding eigenvectors. Find the matrix A that has the given eigenvalues and corresponding eigenvectors.

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Suppose that two countries are in an arms race modeled by the system of differential equations Suppose that two countries are in an arms race modeled by the system of differential equations     where y<sub>1</sub> and y<sub>2</sub> are measured in thousands. Find the solution for the system with initial conditions   , and use it to predict the long-term amounts of arms held by each country. where y1 and y2 are measured in thousands. Find the solution for the system with initial conditions Suppose that two countries are in an arms race modeled by the system of differential equations     where y<sub>1</sub> and y<sub>2</sub> are measured in thousands. Find the solution for the system with initial conditions   , and use it to predict the long-term amounts of arms held by each country. , and use it to predict the long-term amounts of arms held by each country.

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If If   is an eigenvalue of the real   matrix A with corresponding eigenvector   , then   is an eigenvalue of   with corresponding eigenvector    . is an eigenvalue of the real If   is an eigenvalue of the real   matrix A with corresponding eigenvector   , then   is an eigenvalue of   with corresponding eigenvector    . matrix A with corresponding eigenvector If   is an eigenvalue of the real   matrix A with corresponding eigenvector   , then   is an eigenvalue of   with corresponding eigenvector    . , then If   is an eigenvalue of the real   matrix A with corresponding eigenvector   , then   is an eigenvalue of   with corresponding eigenvector    . is an eigenvalue of If   is an eigenvalue of the real   matrix A with corresponding eigenvector   , then   is an eigenvalue of   with corresponding eigenvector    . with corresponding eigenvector If   is an eigenvalue of the real   matrix A with corresponding eigenvector   , then   is an eigenvalue of   with corresponding eigenvector    . .

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Find the eigenvalues and a basis for each eigenspace for the given matrix. Find the eigenvalues and a basis for each eigenspace for the given matrix.

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Find a basis for the eigenspace associated with eigenvalue Find a basis for the eigenspace associated with eigenvalue   for matrix    . for matrix Find a basis for the eigenspace associated with eigenvalue   for matrix    . .

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Suppose the Suppose the   matrix A has n distinct eigenvalues. Then the dimension of each eigenspace is 1. matrix A has n distinct eigenvalues. Then the dimension of each eigenspace is 1.

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The Power Method applied to the matrix The Power Method applied to the matrix   and vector   converges. and vector The Power Method applied to the matrix   and vector   converges. converges.

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