How to plot a function
显示 更早的评论
Hello,
I need to plot a graph with 
where x is between 
and 
,
and ,y is here between 
and 
,
and ,Can you help me with it?
Thanks
采纳的回答
Sam Chak
2022-5-25
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 个评论
Nouha Amine
2022-5-25
Sam Chak
2022-5-25
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
更多回答（1 个）
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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