Simple Discrete Signal Shifting

x (n) =[1, 2, 3, 4,5,6,7,6,5, 4,3, 2,1]. The Italic Digit (i.e. 3) represents n=0 value.

Now, plot the following sequence x1[n]=2x(n-5)-3x(n+4).

Please, if possible, write me the simple code for the above sequence both by using & not using the function(e.g. for signal shifting and addition). N.B. Is there any function called sigshift that can be used here? If yes, Note that sigshift isn't working in my MATLAB (R2010a).

Answer 1

[Star Strider]

See if the circshift function does what you want.