Homework 5

Date Assigned: Wednesday, September 9, 1998
Date Due: Friday, September 11 and Monday, September 14, 1998

Reminder: We will have Quiz 1 on Friday, September 11, 1998.

1. Please read Sections 2.1 and 2.2 in the Kamen/Heck text for Monday, September 14.
2. The URL http://www2.ece.jhu.edu/wjr/
   contains several interesting Java applets that illustrate signals and systems concepts. Go to this web page, and check out the System Properties link. Focus on the Continuous-time systems for now. The objective is to classify whether systems are linear, time-invariant, causal, etc. by applying various input signals and observing the system output signals.

   Try as many of the systems as you would like. At minimum, classify systems A and F. Bring your solution to class on Friday, and summarize your reasoning. I will not collect your solution, but this may help you prepare for Quiz 1. Do not worry about classifying the systems as stable, since we have not discussed stability. Make a note if you discover any interesting systems other than A and F, so we can look at them in class.

   The experiments will work fine if you apply only one input signal at a time. Some useful signals to apply might be a unit step u(t), a delayed step u(t-1), a scaled step 2*u(t), and a sine wave sin(t). You can try others also, but these should get you started.

Thank you.