I suppose this is a Sage bug; Maxima doesn't have a problem with its factor program.
As you know, polynomial "factoring" is a process that mathematically is defined in a unique factorization domain, which is broken in the example at least 2 ways, by have a denominator, and by having exponentials. for example, e^x-1 factors many ways, one being (e^(x/2)-1)*(e^(x/2)+1). RJF On Wednesday, April 10, 2019 at 12:30:42 PM UTC-7, Bill Page wrote: > > sage: sage.version.version > '8.6' > sage: ex=exp(2*x)+exp(-2*x); ex > e^(2*x) + e^(-2*x) > sage: factor(ex) > 2*e^(2*x) > sage: bool(factor(ex)==ex) > False > sage: bool(factor(e^(2*x)+e^(-2*x))==e^(2*x)+e^(-2*x)) > False > sage: bool(factor(2^(2*x)+2^(-2*x))==2^(2*x)+2^(-2*x)) > True > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
