How to plot a function

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

Answer 1

[Sam Chak]

@Nouha Amine

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')

[Nouha Amine]

When I copied this code,

The figure didn't show up,

What is the problem with that

[Sam Chak]

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

Answer 2

[Fabio Freschi]

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')