CARNEGIE MELLON UNIVERSITY



CARNEGIE MELLON UNIVERSITY

DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING

18-771 LINEAR SYSTEMS SPRING 2003

PROBLEM SET II

200 POINTS

DUE 13 FEBRUARY 2003

in LECTURE

LINEAR ALGEBRA

MATRIX ALGEBRA

MATRICES: PROPERTIES AND APPLICATIONS

NORMS

LINEAR ALGEBRAIC EQUATIONS

LEAST SQUARES

THE ALGEBRAIC EIGENVALUE PROBLEM

EIGENVALUES AND EIGENVECTORS

SINGULAR VALUES

RANK

CONDITIONING

FUNCTIONS OF MATRICES

MATLAB( COMPUTATION IN ENGINEERING

READING ASSIGNMENT

WEEK B

Week of 27 January: 3

Week of 3 February: 4

Week of 10 February: 5

PROBLEM B PAGE

VI * 3.17 and 3.19 143 25 POINTS

PROBLEM VII *

25 POINTS

A) Compute manually and with MATLAB( the eigenvalues, eigenvectors and singular values of the [3 x 3] circular shift matrix

[pic]

(B) Interpret and generalize your findings for [n x n] circular shift matrices.

PROBLEM VIII *

25 POINTS

Compute manually and with MATLAB( as a function of the parameter p the singular values and condition number of the matrix

[pic]

where j = +sqrt(-1).

PROBLEM IX *

75 POINTS

In the system of linear algebraic equations

A x = y (1)

the coefficient matrix

[pic]

and the right-hand side input vector

[pic]

A) Apply MATLAB( to compute all of the solutions of (1).

B) Compute the solutions of (1) produced by applying the MATLAB( commands

x = A\y, x = pinv (A) * y

and rref. Interpret your findings.

PROBLEM X *

50 POINTS

The matrix-vector oriented MATLAB® is the premier software system for computer-aided engineering analysis and design. The backslash operator \ pervades numerical linear algebra computation in MATLAB® for solving the system of linear algebraic equations

A x = b (1)

In (1), A(mxn) is the rank r coefficient matrix, x(nx1) is the solution vector and b(mx1) is the right-hand side input vector.

Explain in detail and illustrate diagrammatically (in flow chart format) what MATLAB® returns in response to the backslash operator command

x = A \ b

for m>n, m=n and m ................
................

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