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time shifting of Discrete Signals

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pathmakerpk

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I have the following matrix

x=[2 3 5 4 6 4];
with index at 5 i-e n=0 at value 5.
n is sampling scale value (-----,3,-2,-1,0,1,2,3----)
I have to plot this signal x(n) on time axis n,
then I have to do the following operations,
x[-n],
x[-n+4]
x[-n-4]
x[n-4]
x[n].u[n-2]
x[n].impulse[n+2]
x[n].impulse[n-2]
 

I think x[-n] = [4 6 4 5 3 2] with 5 an index of 0.
For x[-n+4], first do shifting and then scaling.
So x[-n+4]= x[-(n-4)].
and x[n-4] = [2 3 5 4 6 4]; with 5 an index of 4.
and x[-n+4] = [4 6 4 5 3 2] with 5 an index of -4.

Calculate others also in the same way. Refer Page 9 of this link for more information.
3 Discrete Time Signal Operations
 

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