EE 200L Homework 1 – G. Caire – August 28, 2009
1
USC EE 200L – Foundations of Electrical Engineering Systems – Fall 2009
Homework 1
Due date:
Thursday, September 3, at 12:30 PM at the beginning of the class.
Please drop your paper on the instructor’s desk.
A note on notation: vectors are denoted by boldface small letters, e.g.,
v
. Matrices are denoted
by boldface capital letters, e.g.,
A
.
1. Based on our own experience, describe a “system with memory” that is some device or
process that transform a signal into another signal where the output
y
(
t
) does not depend
only on the value of the input
x
(
t
) at time
t
, but depends on a temporal window of values
{
x
(
τ
) :
t

T
≤
τ
≤
t
}
.
Notice, you may very well choose to describe a discretetime system, or a system that operates
on twodimensional signals, such as digital images. Notice: IT MUST BE SOME ACTUAL
REALWORLD SYSTEM, NOT JUST AN ABSTRACT MATHEMATICAL EQUATION,
AND YOU MUST
CAREFULLY MOTIVATE YOUR ANSWER
.
2. Based on our own experience, describe a nonlinear system, that is, some device or process
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 Fall '08
 ZADEH
 Electrical Engineering, Linear Algebra, Vector Space, Linear combination, G. Caire, EE 200L Homework

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