How to plot a function

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Nouha Amine
Nouha Amine on 25 May 2022
Commented: Sam Chak on 25 May 2022
Hello,
I need to plot a graph with
where x is between and ,
y is here between and ,
Can you help me with it?
Thanks

Accepted Answer

Sam Chak
Sam Chak on 25 May 2022
You can do something like this:
x = 0.1:0.01:10;
y1 = x.^(-2.9-0.1);
y2 = x.^(-2.9+0.1);
plot(x, y1, x, y2)
ylim([1e-8 1e0])
xlabel('x')
ylabel('y')
  2 Comments
Nouha Amine
Nouha Amine on 25 May 2022
When I copied this code,
The figure didn't show up,
What is the problem with that
Sam Chak
Sam Chak on 25 May 2022
That's strange... I've tested the code on both MATLAB and Octave. Try adding this:
clear all
close all
x = 0.1:0.01:10;
y1 = x.^(-2.9-0.1);
y2 = x.^(-2.9+0.1);
plot(x, y1, x, y2)
ylim([1e-8 1e0])
xlabel('x')
ylabel('y')
grid on

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More Answers (1)

Fabio Freschi
Fabio Freschi on 25 May 2022
You may use fplot
figure, hold on
fplot(@(x)x.^-3,[1 1e5])
fplot(@(x)x.^-2.8,[1 1e5])
% use bi-logaritmic scale
set(gca,'YScale','log','xScale','log')

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