# Systems and Signals questions-plots

1. Feb 1, 2014

### Alpha_Centauri

Systems and Signals questions---plots

1. The problem statement, all variables and given/known data

Problem: Express the bottom 5 plots in term of x(t) (the top plot) with its time shift, time scale, time reverse and superposition properties. (see attached picture)

2. Relevant equations

3. The attempt at a solution

I have very little notes on this and feel like I have done this a few years ago, but my memory is failing me. I am not understanding how to get the plots just from x(t).

My attempt for x1(t): it looks like it is just x(t) but 2 of them back to back with one being reversed.Also it is shifted left by 1. So I figured it would look something like x(t+1) + x(-t+1).

I have no idea if that is right or not or how to check it. If anyone could help teach me with examples or have a good link that can teach me that would help a lot.

Thanks!

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2. Feb 3, 2014

### Staff: Mentor

Hi Alpha_Centauri! http://img96.imageshack.us/img96/5725/red5e5etimes5e5e45e5e25.gif [Broken]

A curly question you have here, for your first post! Perhaps if you get no help here, message a moderator and ask to have this moved to the maths homework forum (precalculus maths). Your subject line might have thrown a few off the scent of an easy maths problem.

I'm a bit rusty on these myself. Sorry.

Last edited by a moderator: May 6, 2017
3. Feb 3, 2014

### Alpha_Centauri

Thanks NascentOxygen! I will keep that in mind for future post, but for this I think I was able to figure it out!

Last edited by a moderator: May 6, 2017