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Can anyone help me with the error?

Asked by Gaurav Srivastava on 31 May 2019
Latest activity Edited by Rik
on 31 May 2019
edit by Rik (code originally posted as image):
clc
clear
disp(' Question Number 2')
x=0:1:10;
y=40./(1+((x-4).^2) + 5*sin((20*x)/pi));
fplot(y,x)

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1 Answer

Answer by Rik
on 31 May 2019
Edited by Rik
on 31 May 2019
 Accepted Answer

You aren't plotting a function, but a vector. Replace fplot by plot, or replace your input by a function. Actually, doing both will teach you a valuable lesson about aliasing.
It is always a good idea to read the documentation carefully when you are getting unexpected results or errors.
Here is a code example of both options (using subplot to show them in one figure):
clc
%clear %no need to use clear
disp(' Question Number 2')
x=0:1:10;
f=@(x) 40./(1+((x-4).^2) + 5*sin((20*x)/pi));
y=f(x);
figure(1),clf(1)%only use clf in debugging
subplot(1,2,1)
plot(x,y)
ylim([-35 35])%ensure same view for both plots
subplot(1,2,2)
fplot(f,[min(x) max(x)])
ylim([-35 35])%ensure same view for both plots

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