> From: Billinghurst, David
>
> > From: Raymond Toy
> >
> > >>>>> "David" == David Billinghurst
> > <billingd at users.sourceforge.net> writes:
> >
> > David> Update of
> > /cvsroot/maxima/maxima/share/contrib/diffequations/tests
> > David> In directory
> sc8-pr-cvs7.sourceforge.net:/tmp/cvs-serv16616
> >
> > David> Modified Files:
> > David> rtestode_kamke_2_4.mac
> > David> Log Message:
> > David> Improvements to sin.lisp rev 1.18 have resulted in
> > better answers to
> > David> Kamke 2.337 2.270 2.375 and 2.376.
> >
> > David>
> > (pn_(337),ans:contrib_ode(eqn:'diff(y,x,2)=-(3*x+2*b+a)*'diff(
> > y,x,1)/(2*(x+a)*(x+b))-(a-b)*y/(4*(x+a)^2*(x+b)),y,x));
> > David>
> > -[y=%k1*sin(sqrt(a-b)*'integrate(1/sqrt(4*x^3+4*b*x^2+8*a*x^2+
> > 8*a*b*x+4*a^2*x+4*a^2*b),x))+%k2*cos(sqrt(a-b)*'integrate(1/sq
> > rt(4*x^3+4*b*x^2+8*a*x^2+8*a*b*x+4*a^2*x+4*a^2*b),x))];
> > David>
> > +[y=%k1*sqrt(x+b)/(sqrt(a-b)*sqrt((x+b)/(a-b)+1))+%k2/sqrt((x+
> > b)/(a-b)+1)];
> >
> > Do you have radexpand:all here?
>
> Probably not. I'll have a look
>
> D
radexpand:all is set in ode2.mac (and presumably ode2.lisp) in routines:
- cc2, method constcoeff
- xcc2, method xformtoconstcoeff (the above case)
- bessel2, method bessel
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