I proposed this change on the mailing list some time ago
(http://www.math.utexas.edu/pipermail/maxima/2008/012981.html) and
nobody objected at that time.
I think that maxima should not simplify asin(sin(x)) to x,
triginverses=true prevents this simplification, while sin(asin(x))
still simplifies to x. With the change we also get asin(sin(%pi^2)) ->
3*%pi-%pi^2, before it was %pi^2.
Andrej
On Sun, Mar 1, 2009 at 9:02 PM, Raymond Toy <toy.raymond at gmail.com> wrote:
> Andrej Vodopivec wrote:
>> Update of /cvsroot/maxima/maxima/src
>> In directory 23jxhf1.ch3.sourceforge.com:/tmp/cvs-serv12025
>>
>> Modified Files:
>> ? ? ? trigi.lisp trigo.lisp
>> Log Message:
>> Set the default value of triginverses to true. Added new
>> trig identities.
>>
>>
>>
> Why should triginverses now default to true when it has previously been all?
>
> Did I miss some discussion about this? ?If so, ignore me.
>
> If not, then I think any change of defaults ought to be discussed on the
> mailing list.
>
> Ray
>
> _______________________________________________
> Maxima mailing list
> Maxima at math.utexas.edu
> http://www.math.utexas.edu/mailman/listinfo/maxima
>