
Re: Numerical integration with maxima
Posted:
Nov 6, 2012 10:05 AM


fyi;
If you do not get answer here (I myself do not use Maxima) you can try the Maxima mailing list
http://maxima.sourceforge.net/maximalist.html
On 11/6/2012 4:46 AM, Claude wrote: > Dear readers > > I would like to numerically integrate the function abs(sin(x)) over the > domain 0 to 2*pi. > > I've defined the function > f=abs(sin(x)) > > and then I called > > integrate(f, x, 0, 2*pi) > > But now I don't know how to numerically evaluate this integral. > > Manually, it is easy to see that the result should be 4, but how to ask > maxima to compute this ? > > Similarly, I cannot plot this function over the same domain. I've tried : > > wxplot2d([abs(sin(x))], [x,0,6.28])$ > > which gives the expected graph, but, if I replace the value 6.28 by 2*pi, > wxmaxima says that > > plotting: range must be of the form [variable, min, max]; found: [x,0,2*pi] > > > Can you please give me some advice? > > Thank you in advance for your help > >

