On 12 bře, 16:48, Burcin Erocal <bur...@erocal.org> wrote: > On Fri, 12 Mar 2010 15:23:43 +0100 > > Paul Zimmermann <paul.zimmerm...@loria.fr> wrote: > > is there a way in Sage to convert expressions involving trigonometric > > or hyperbolic functions to exponentials, like the convert/exp > > function of Maple? > > > > convert(sinh(log(t)),exp); > > 1 > > t/2 - --- > > 2 t > > > > convert(cos(log(t)),exp); > > 1/2 exp(ln(t) I) + 1/2 exp(-I ln(t)) > > No, AFAIK, nothing other than explicit substitution with .subs(). >
You can use something like this desolve(t*diff(x,t)==x +sqrt(x^2+t^2),x)._maxima_().ev(logarc=true).sage() t == (sqrt(x(t)^2/t^2 + 1) + x(t)/t)*c desolve(t*diff(x,t)==x+sqrt(x^2+t^2),x) t == c*e^(arcsinh(x(t)/t)) Robert -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
