Question

CAN YOU GUYS HELP ME TO SOLVE THIS PROBLEM AND ALSO DO THE PLOTS WITH MATLAB PLEASE

EXAMPLE 5.11 Let x(n) -10 (0.8)", 0n 10 be an 11-point sequence a. Sketch x((n + 4))11R11 (n), that is, a circular shift by 4 samples toward the left. b. Sketch x(n -3))15R15(n), that is, a circular shift by 3 samples toward the right, where r(n) is assumed to be a 15-point sequence

Answer 1

n = linspace(0,10,11);
x = 10*(0.8).^n;
% plot x(n)
plot(x)
hold on;

% Answer of a. To view part a) comment out line 15-19
circ_4plus = circshift(x,-4,2);
%plot x(n+4)
plot(10*(0.8).^circ_4plus);
hold off

%Answer of b.

n = linspace(0,10,15);
circ_3minus = circshift(n, 3,2);
x = 10*(0.8).^circ_3minus;
%plotting x(n-3)
plot(x);