Sketching Signal Over Time | Homework Statement & Equations

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Homework Help Overview

The problem involves sketching a signal over time defined by the equation x(t)=1+δ(t-2)+δ(t+2)+δ(5). The discussion centers around understanding the implications of the delta functions in the context of signal representation.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants express uncertainty about the initial sketch, with some suggesting it may resemble a square wave or a constant value with peaks. Questions arise regarding the interpretation of δ(5) and its validity as a function of time.

Discussion Status

The discussion is ongoing, with participants exploring different interpretations of the delta functions. Some guidance has been offered regarding the nature of the delta function, particularly its behavior at specific points, but no consensus has been reached on the overall representation of the signal.

Contextual Notes

There is a noted confusion regarding the term δ(5), with participants questioning its relevance and suggesting it may not conform to expected definitions of the delta function.

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Homework Statement



The problem is to sketch the signal over time:
x(t)=1+δ(t-2)+δ(t+2)+δ(5)

Homework Equations


N/A


The Attempt at a Solution


I'm not too sure how to begin this. Would it look like a square wave with different "peaks" over time?
 
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it would look like a constant value with a few peaks

however [itex]\delta (5)[/itex] doesn't make sense, it should be a function of t
 
lanedance said:
it would look like a constant value with a few peaks

however [itex]\delta (5)[/itex] doesn't make sense, it should be a function of t

well wouldn't that be just a constant value of 5 added across the whole signal?
 
don't think so, the delta function [itex]\delta (t)[/itex] is zero everywhere except at t=0, hence why it doesn't make much sense
 
lanedance said:
don't think so, the delta function [itex]\delta (t)[/itex] is zero everywhere except at t=0, hence why it doesn't make much sense

I check it again, I did write it correctly. So assuming that's right, would it be a linear looking like increasing as time increased?
 
well as I said it doesn't make sense, but if you have to work with it, I think delta(5) = 0
 

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