Re: [Maxima-discuss] Basic simplify question

[Barton W. <wi...@un...>]

One way:

(%i17)        load(format)$

(%i18)      XXX : x*exp(-cos(x+1))+x$

(%i19)      format(XXX,%poly(x));
(%o19)      (%e^(-cos(x+1))+1)*x


I believe that the author of the format package is https://www.nist.gov/people/bruce-r-miller

The user-documentation is a  *.ps file, and there is a rtest file and a demo file. Maybe somebody could covert the documentation to pdf, give the code a good checking, and maybe include the test file in with the share tests.

My guess is that the code is reliable, but I've only used it a few times.

--Barton
________________________________
From: Gunter Königsmann via Maxima-discuss <max...@li...>
Sent: Monday, November 10, 2025 3:35 AM
To: max...@li... <max...@li...>
Subject: [Maxima-discuss] Basic simplify question

Caution: Non-NU Email


Dear all,

A colleague of mine has asked me how to factor out the x in

tst:x*exp(-cos(x+1))+x;

factor(tst) factorizes the exp() function, as well, which doesn't meet my colleague's idea of "simple".

collectterms(tst,last(tst));

doesn't change the equation at all - and

factor(tst,last(tst));

results in

factor: second argument must be a nonlinear, univariate polynomial; found: x

I guess the real answer would be simple, but I don't seem to find it => Could you help me out?


Kind regards,

  Gunter.