What am I doing wrong. My frequency should be like the picture.

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Jorje German
Jorje German 2020-9-10
评论： Jorje German 2020-9-12
my simulation looks like this
and below is my code.
clc
clear all
a = 2;
b = 3;
c = 0.25;
d = 1;
SimData = sim('Jgerman_Part_a_Model');
Yvals=SimOut;
Xvals=TimeOut;
figure()
plot(Xvals,Yvals)
grid
title('Problem 1.2a Simulated Output')
xlabel('Time')
ylabel ('Output Amplitude')
plot looks like this but it doesn't match to the expected graph below.
What exactly am I doing wrong.

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采纳的回答

Ameer Hamza
Ameer Hamza 2020-9-10
Double-click the "Sine Wave" block and set the frequency to 2*pi.

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