Understanding Convolution Sum: Solving a Signal Equation

[Angello90]

Hi there,

This is a different question I tried.

The signal is given as x[n] = 2u[n+2] - 3u[n-2] +u[n-4], and it has values x[-2]=2, x[2]=-1 and x[4]=0. True or false?

I think it's false cause If I plug in all the x in each case ie, -2, 2 and 4, into the signal, than I get 3 different values for u.

For x[-2]; u = 1/3
For x[ 2]; u = -1/6
For x[ 4]; u = 0

Is that correct way to do this question?
Help guys!

Thanks

 

[Angello90]

This is not homework!

 

[berkeman]

This is not homework!

The Homework Help forums are the right place for this type of question, since it is schoolwork. Please see this thread for a discussion about the PF Rules on schoolwork:

https://www.physicsforums.com/showthread.php?t=373889

.

 

[bos1234]

you have to draw x(n) first. Then apply what they gave you. All are true

 

[Angello90]

Ok so today I did something called Convolution Sum, and my lecture showed me how to draw graphs with u[n], and for the question above I was able to come up with a graph.

Is this correct?