Why doesn't my graph show?

>> x = 50e+12: 10e+12: 150e+12;
>> y = (7.9)*(((2e+14)*x)./((4*x.^2)+(5e+12)));
>> plot(x,y)

i need this to plot like the first plot in my attachment...why doesnt it?

[Walter Roberson]

The plot shows up for me when I copy and paste those lines.

[chris henkel]

hi! The plot will show up but its not the same as the one in the attachment that i added to my question. could you point out the problem?

[Michal Dobai]

I don't see the problem with your code. It will show your graph just fine. Problem might be that your graph doesn't look like the one in your homework assignment.

I recommend you to check the range of values in your x variable :)

So my question for you. Do you really have a problem with your graph not showing at all?

[Michal Dobai]

Oh, I saw your comment after I post mine. So you DON'T have a problem with showing your graph. Then, as I wrote in my previous comment, i recomend you to check the x range you generating.

[chris henkel]

thank you Michal. My graph does show, I guess I meant show correctly

[chris henkel]

Michal, what would the code suppose to look like for a more correct x range??

[Star Strider]

See — Why is my graph not right?

[Michal Dobai]

Assuming your formula for y is correct, you can just change your x to:

x = *-50e+12*: 10e+12: 150e+12; %(or even -150E+12)

..and it suddenly looks more like in your assignment. But this is not really MATLAB question, it's more like a physics question and unfortunately I can't help you with that 'physics' part.

[Michal Dobai]

Also, please avoid posting duplicate questions in future. You can always edit your original question, when you want to add some new information, or write a comment.