Write a MATLAB program to determine the response of the following system

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Shamala Nagarajoo
Shamala Nagarajoo 2017-12-11
编辑： Kian Azami 2017-12-11
Write a MATLAB program to determine the response of the following system
y(n) = 4.5x(n) + ay(n-1)
where a = 0.5 and the input signal x(n) is sinewave, x(n) = 3sin (2*pie*0.2n) Assume zero initial condition, y(-1) = 0. Plot y(n) for n= 1,2,.....200

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回答（1 个）

Kian Azami
Kian Azami 2017-12-11
编辑：Kian Azami 2017-12-11
I think you can use the following code:
a = 0.5;
for n=1:200
x(n) = 3*sin(2*pi*0.2*n);
if n == 1
y(n) = 4.5*x(n);
else
y(n) = 4.5*x(n)+a*y(n-1);
end
end
figure
plot(y,'marker','.','markersize',10)
xlabel('n')
ylabel('y(n)')

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