trigrat of list element is different from trigrat of same element alone

Computer Algebra System written in Common Lisp

Brought to you by: kjak, l_butler, macrakis, robert_dodier, and 2 others

#5210 trigrat of list element is different from trigrat of same element alone

Milestone: None

Status: open

Owner: nobody

Labels: trigrat (10) list (3)

Priority: 5

Updated: 2026-09-02

Created: 2026-09-02

Creator: David Scherfgen

Private: No

(%i1) s : cot(x + %pi/3)/cos(3*y - 2*x)$

(%i2) trigrat(s);
(%o2) sqrt(3)/(cos(3*y-2*x)+cos(3*y-4*x)+cos(3*y))
 -(2*sin(2*x))/(cos(3*y-2*x)+cos(3*y-4*x)+cos(3*y))

 (%i3) trigrat([cos(y), s])[2];
 (%o3) [very long result]

trigrat should process list elements independently from each other.

Discussion

David Scherfgen - 2026-09-02

Description has changed:

Diff:

--- old +++ new @@ -7,6 +7,6 @@ (%i3) trigrat([cos(y), s])[2]; (%o3) [very long result] - ~~~ +~~~ `trigrat` should process list elements independently from each other.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:

trigrat of list element is different from trigrat of same element alone

Computer Algebra System written in Common Lisp

Group

Searches

Help

#5210 trigrat of list element is different from trigrat of same element alone

Discussion