Hi-
This is a very good question. In the documentation, it said
the risch fucntion would automatically be called in the case of nested
exponentials and algorithms, which obviously didn't happen.
Also, I feel the documentation is not clear regarding
integration.
Regs
Henry
synthespian@uol.com.br
C Y writes:
> Hmm. OK, thanks guys. This still leaves the question, though -
> shouldn't Maxima either a) call the risch function when integrate is
> handed something it can't do or b) at the very least not return a wrong
> answer?
>
> CY
>
>
> --- Richard Fateman <fateman@cs.berkeley.edu> wrote:
> > The del comes from not giving the 2nd arg to diff. try diff(%,x)
> > instead of diff(%).
> > RJF
> >
> >
> > Valerij Pipin wrote:
> >
> > > Well,
> > > In macsyma there is another integrator to deal with transcendental
> > functions
> > > (C1) risch(3^log(x),x);
> > > LOG(3) LOG(x)
> > > x %E
> > > (D1) -----------------
> > > LOG(3) + 1
> > > So, it's correct. However differentiation gives a delta
> > > (C2) diff(%);
> > > LOG(3) LOG(x) LOG(3) LOG(x)
> > > LOG(3) %E %E
> > > (D2) (---------------------- + ---------------) DEL(x)
> > > LOG(3) + 1 LOG(3) + 1
> > > (C3) factor(%);
> > > LOG(3) LOG(x)
> > > (D3) %E DEL(x)
> > >
> > >
> >
> >
> > _______________________________________________
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> > Maxima@www.math.utexas.edu
> > http://www.math.utexas.edu/mailman/listinfo/maxima
>
>
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