Hi, I do not see any simple way to do this in Sage at the moment. Following this post<https://doxdrum.wordpress.com/2011/01/23/sage-tip-rewriting-expressions/>, a workaround is to use the extension rewrite() written by François Maltey (see here <http://wiki.sagemath.org/symbolics/rewrite> for documentation and here <http://wiki.sagemath.org/symbolics/rewrite?action=AttachFile> for download). Then:
sage: %runfile rewrite-20110123.sage sage: t=var('t', domain='real') sage: s = log(cosh(t)+sinh(t)) sage: rewrite(s, 'sinhcosh2exp') t Eric. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.