Matlab how can I make this inequality?

I have an exercise that requires me to plot a function of y=x^2 from 0<=x<pi/2 what would be the right approach for this?

[John D'Errico]

Please don't edit your question away. That is an insult to the people who bothered to spend the time to answer your question. It is an insult to the Answers site, since it makes those answers useless for ANYBODY ever to use.

If I had ever answered a question by you and then see you do this, I would never bother to answer another of your questions.

[Adam]

I wish there was a personal black list that we could put people on to see at a glance people who have deleted their questions in the past, though usually they are new names anyway I suppose.

[Star Strider]

TMW can restore deleted Questions. I believe Rena Berman is the person to contact.

[John BG]

Mr Nash, please post your question again so all readers can read your question

[Rena Berman]

(Answers dev) Restored question edits.

[John BG]

Mr Nash

please keep adding details with comments to your question and/or to the diverse answers of interest until you get what you need.

Then please choose and accept answer by clicking on the button Accept Answer.

Is it a limit that you want to calculate approaching (pi/2)^2?

Answer 1

[John BG]

There are different ways to display a graph as you are asking, one of the most basic ones being

1. define the base vector

step=0.01
x=[0:step:pi/2]

2. define the function

y=x.^2;

3. display

plot(x,y)
grid on

comments:

• note the element wise operation implemented with the dot preceding the operator with '.^'
• plot has many optional fields, check MATLAB help for plot
• the smaller the step the higher the resolution
• grid on is also optional
• the figure window has a marker that can be used for quick checks
• ; at the end of a command line prevents MATLAB command window showing execution

if you find these lines useful would you please mark my answer as Accepted Answer?

To any other reader, if you find this answer of any help please click on the thumbs-up vote link,

thanks in advance for time and attention

John BG

<mailto:[e-mail] [e-mail]>

Answer 2

[Star Strider]

You can use ezplot or fplot:

y = @(x) x.^2;

figure(1)
ezplot(y, [0, pi/2])
grid

figure(2)
fplot(y, [0, pi/2])
grid