Date Assigned: Friday, October 2, 1998 Date Due: Monday, October 5, 1998
Quiz 2:
We will have Quiz 2 on Wednesday, October 7.
The topics for the quiz include classifying systems
(linear and time-invariant), impulse response,
and convolution for discrete-time and continuous-time systems.
For practice with computing the convolution operation,
I would suggest that you work on
Homework 11, this homework assignment, and
Lab 3.
For Lab 3,
you can omit item 8 from the lab report.
We will discuss this item in class on Friday, October 9.
We will not have lab on Thursday, October 8
in order to keep the Tuesday and Thursday sections from getting
too far apart.
(The Tuesday lab section will not meet on November 24 prior
to Thanksgiving break.)
Listed below are some extra problems to give you more
practice with discrete time systems.
These do not have to be handed in, but I will answer questions
about these problems in class on Monday.
Problem 3.2 in the text for practice with impulse
response.
Problem 3.5, parts (a) and (b) for convolution.
Remember that you can check your result with the
MATLAB command conv.
A Java applet that graphically illustrates
continuous-time
convolution is available at
http://www2.ece.jhu.edu/wjr/
with the title
"Joy of Convolution".
I think that this exercise helps you to visualize the convolution
operation,
and I suggest that
you should check it out.
(Nothing needs to be handed in for this part.)
Please perform the following
continuous-time convolution operations:
Problem 3.15 (all parts).
For case (c), the integral needs to be evaluated explicitly.
I suggest that you draw pictures in order to get the proper
limits on the integral.
Do your best on these problems, and we will review the solutions
on Monday.
For more practice, try
Problem 3.19 (hint for part b: use linearity and time-invariance
with your answer from part a).
However, this does not need to be handed in.