How to plot a simple curve
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I am trying to learn MATLAB and have stumbled straight away. Can someone please tell me how you plot y = x^2 for x = 1 to 10.
采纳的回答
the cyclist
2011-2-5
Keeping as close as possible to your notation, to be clear to you:
>> x = 1 : 0.1 : 10;
>> y = x.^2;
>> plot(x,y)
Note that the 0.1 is there to define the intervals. You'll get a smoother curve in your plot if this value is small; the vector will have correspondingly more elements.
I agree with Jiro that you will benefit from a careful read of the documents he references.
更多回答（7 个）
Matt Fig
2011-2-4
Or, if you want to be able to do this for a general function (or more):
g = @(x) x.^2; % Create your function for plotting.
h = @(x) x.^2.5; %Create a second function.
x = 1:.01:10; % Create the range for the functions.
plot(x,g(x),'r',x,h(x),'b') % Use a red line for the first, blue for second.
To only plot one function:
plot(x,g(x)) % See help plot for more options.
Jiro Doke
2011-2-4
编辑：John Kelly
2013-11-13
3 个投票
This is a very basic question and we have many places in the documentation for you to learn:
Sean de Wolski
2011-2-4
plot(1:.1:10,1:.1:10.^2)%x = 1 to 10 with spacing of 0.1
Also read the getting started documentation.
%SCd
1 个评论
Matt Fig
2011-2-4
Your code will error, Sean de. You are trying to plot different length vectors!
Doug Eastman
2011-2-5
ezplot('x^2',[1,10])
or
ezplot(@(x) x.^2,[1,10])
Erick
2014-9-11
0 个投票
hello, how do I change my axes to have different ranges? for my graph below? and I want the curves to run from the x-axis upward to right
2 个评论
the cyclist
2014-9-11
I suggest posting this as a new question, rather than burying as an "answer" to a 3-year-old question.
Yundie Zhang
2020-5-17
haha,,,,,
set x axix and y axis limits
xlim()
ylim()
le nhat
2016-5-18
0 个投票
how to paint graph with data activity
1 个评论
the cyclist
2016-5-18
I suggest posting this as a new question, rather than burying as an "answer" to a 5-year-old question.
Ademolawa John
2022-4-29
0 个投票
hello , pls how can I plot this curve that run from top left to bottom right with Y axis running from 1 to 16 and x from 1.8 to 2.7. Thanks
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