Unit step function problem

  • Thread starter veralika
  • Start date
  • #1
4
0
if you subtract two delayed unit step functions, is the resultant a unit step function too? what is the value at the last point? 0 or 1? similarly, if you add 2 unit step functions will the magnitude of the resultant funtion be 1 or 2?
 

Answers and Replies

  • #2
34
0
not exactly, you need to deal with different segements of you input function separately.
 
  • #3
Born2bwire
Science Advisor
Gold Member
1,779
21
Just draw them out and do the additions and subtractions that way. The step function is rather simple so a quick pictoral representation should show you your answer.
 
  • #4
4
0
Just draw them out and do the additions and subtractions that way. The step function is rather simple so a quick pictoral representation should show you your answer.

i still dont get it. could u just tell me that when u subtract 2 unit step functions, will there or will there not be a discontinuity at the last point?
 
  • #5
Born2bwire
Science Advisor
Gold Member
1,779
21
i still dont get it. could u just tell me that when u subtract 2 unit step functions, will there or will there not be a discontinuity at the last point?

What is the last point? This depends completely on what the actual step functions are that you are operating on. Just draw the step functions out on a graph, one above the other and it should be apparent how the resultant plot should look like when you add or subtract the two.
 

Related Threads on Unit step function problem

  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
1
Views
5K
  • Last Post
Replies
15
Views
3K
  • Last Post
Replies
2
Views
571
Replies
5
Views
4K
  • Last Post
Replies
3
Views
572
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
6
Views
5K
  • Last Post
Replies
8
Views
2K
Top