Question

MATLAB PLEASE

6. Determine which sequences are average power and plot 5 periods. For part (c), show that it is possible to express the sequence using a simple formula. As for the aperiodic signals, just plot 40 samples periodic. Hence, for the periodic ones, find their period (a) an (n) %3D2 cos(풍n + ) sin(n + 좋) 4sin(3Tn- (b) 2(n) (e) ra(n) (d) a(n) COs( sin(n) + 3cox(품n -) sin(동n + 좋) com(품끼) (e) rs(n) (f) a(n) 4 (g) a7(n)-2sincn). Hint Choose -100 ns 100. Hence, find the energy

MATLAB PLEASE

most simple code possible

Answer 1

n=-100:1:100;
%a
x1=2*cos((pi/6*n)+(pi/4)); %sequence
p1=seqperiod(x1); %period of sequence
E1 = sum(abs(x1).^2);
P1 = 1/numel(x1)*sum(abs(x1).^2);
plot(n,x1);
%b
x2=sin((pi/15*n)+(pi/5));
p2=seqperiod(x2);
E2 = sum(abs(x2).^2);
P2 = 1/numel(x2)*sum(abs(x2).^2);
%c
x3=4*sin(3*pi*n-(pi/2));
p3=seqperiod(x3);
E3 = sum(abs(x3).^2);
P3 = 1/numel(x3)*sum(abs(x1).^2);
%d
x4=cos(pi*n/sqrt(15));
p4=seqperiod(x4);
E4 = sum(abs(x4).^2);
P4 = 1/numel(x4)*sum(abs(x4).^2);
%e
x5=sin(pi*n/4)+3*cos((pi*n/3)-(pi/3));
p5=seqperiod(x5);
E5 = sum(abs(x5).^2);
P5 = 1/numel(x5)*sum(abs(x5).^2);
%f
x6=4*sin((pi*n/5)+(pi/4));
p6=seqperiod(x6);
E6 = sum(abs(x6).^2);
P6 = 1/numel(x6)*sum(abs(x6).^2);
%7
x7=2*sinc(pi/15*n);
p7=seqperiod(x7);
E7 = sum(abs(x7).^2);
P7 = 1/numel(x7)*sum(abs(x7).^2);