[sage-devel] Re: Integration Development

2009-03-08 Thread rjf
1. If you were to use Maxima directly, you could probably teach it, by pattern matching, or other techniques, to do some set of cosine transforms. This would probably be far more economical of your time, and would give you interesting insights into how a very powerful symbolic mathematical manipul

[sage-devel] Re: Integration Development

2009-03-08 Thread clinton bowen
On Mar 7, 11:27 am, Robert Dodier wrote: > clintonbowen wrote: > > I tried some Cosine Transforms found in the book 'Handbook of Integral > > Equations' by  Andrei D. Polyanin and > > Alexander V. Manzhirov into sage and I found that sage was not able to > > perform these integrals. > > For the

[sage-devel] Re: Integration Development

2009-03-08 Thread Maurizio
I'd like to stay on-topic, but at the same time I'd like to ask you if it's any interest for us (SAGE users) the Poor Man's integration in SymPy: http://code.google.com/p/sympy/issues/detail?id=463 [ I'm referring to this, since this integration formula seems to be one of the most important goal

[sage-devel] Re: Integration Development

2009-03-07 Thread mark mcclure
On Mar 7, 5:47 pm, Robert Dodier wrote: > mark mcclure wrote: > > (%i1) integrate(1/x^3, x, 1, inf); > > Integral is divergent > > It's been fixed in CVS, so it will be in the next release. That's great Robert, thanks! Mark --~--~-~--~~~---~--~~ To post to this g

[sage-devel] Re: Integration Development

2009-03-07 Thread Robert Dodier
mark mcclure wrote: > (%i1) integrate(1/x^3, x, 1, inf); > > Integral is divergent It's been fixed in CVS, so it will be in the next release. Sorry for the bother. > (%i2) assume(p>1); > (%o2) [p > 1] > (%i3) integrate(1/x^p, x, 1, inf); > (%o3) 1/(p-1) Literal

[sage-devel] Re: Integration Development

2009-03-07 Thread Burcin Erocal
Hi, On Sat, 7 Mar 2009 01:19:05 -0800 (PST) clinton bowen wrote: > > I tried some Cosine Transforms found in the book 'Handbook of Integral > Equations' by Andrei D. Polyanin and > Alexander V. Manzhirov into sage and I found that sage was not able to > perform these integrals. As Robert Dod

[sage-devel] Re: Integration Development

2009-03-07 Thread mark mcclure
On Mar 7, 1:27 pm, Robert Dodier wrote: > clinton bowen wrote: > > I tried some Cosine Transforms found in the book > > 'Handbook of Integral Equations' by Andrei D. > > Polyanin and Alexander V. Manzhirov into sage and > > I found that sage was not able to perform these > > integrals. > > For t

[sage-devel] Re: Integration Development

2009-03-07 Thread Robert Dodier
clinton bowen wrote: > I tried some Cosine Transforms found in the book 'Handbook of Integral > Equations' by Andrei D. Polyanin and > Alexander V. Manzhirov into sage and I found that sage was not able to > perform these integrals. For the record, what are some of integrals you tried? > I gue