Basic Matlab time shift query

[INS-ANI]

here is the problem statement
(this is not H.w )

x[n]=[-1,2,0,4]
(origin at 0)
plot x[-n]+x[1-n]


I have just started matlab and would appreciate if you can help me with the concept behind this problem's solution.

Thankyou.

 

[INS-ANI]

any answers?

 

[RBB]

Looks like homework.

 

[INS-ANI]

sir my class is still stuck at basic dsp,its part of the practice assignment taken from previous batch (senior)

 

[Communications_Engineer]

one hint for you, use fliplr function so that, x[-n] = fliplr(x[n])

Figure out how to use it and set the time axis according

 

[INS-ANI]

Sir, I had tried fliplr but was not getting desired results..please look at my code.
This is a code to plot X[-n]..

x=[-1,2,0,4];
n=-2:1;
k=fliplr(x);
m=-n;
plot(m,k)


grid on
xaxis('x axis:n')
yaxis('y axis:x')

The problem i am facing is how to handle X[n] where values in array x are related to n, and subsequently plot them.
Like in this problem, i have managed to get x[-n] by another method, but find my self clueless to plot x[-n] + x[1-n].

I hope i have made myself clear.. i am new to matlab and still struggling to find a right approach.

---------- Post added at 08:21 ---------- Previous post was at 07:40 ----------

please help me with this:
if x=[4 0 2 -1]
with origin at 0.
how can i create x1=[[4 0 2 -1] with its origin at 4?