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December 27th, 2010, 02:17 PM  #1 
Newbie Joined: Dec 2010 Posts: 2 Thanks: 0  How to solve * Plot a primitive of sin(x^3). in octave?
This is my question how to solve Plot a primitive of sin(x^3) in octave. I don't know if you could help me. Thank you very much. 
December 27th, 2010, 07:09 PM  #2 
Global Moderator Joined: Dec 2006 Posts: 17,919 Thanks: 1383 
I haven't used Octave, but I assume you would need to know how to (a) set up the numerical integration of sin(x^3) (from, say, 0 to x) as a function of x, and then (b) plot the values produced by that function. Have you used Octave before or read its documentation? 
December 28th, 2010, 12:14 AM  #3 
Newbie Joined: Dec 2010 Posts: 2 Thanks: 0  Re: How to solve * Plot a primitive of sin(x^3). in octave?
First of all thank you very much skipjack. I have read some documentation about Octave and I tried out some easy examples, I don't think it would be a problem to "write" it on it. My doubt is about what process should I follow inside octave to get it. I'm not sure if I have explained it clearly; my English isn't as good as it should be, sorry! 
December 28th, 2010, 12:18 AM  #4 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,155 Thanks: 462 Math Focus: Calculus/ODEs  Re: How to solve * Plot a primitive of sin(x^3). in octave?
Check out this link: http://www.gnu.org/software/octave/d...tegration.html to get started with the process of numerical integration. 

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octave, plot, primitive, sinx3, solve 
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