[Maxima-bugs] [maxima:bugs] #4758 limits of the form gamma(ind)

[Stavros M. <mac...@us...>]

``limit`` (and in fact Maxima in general) has minimal understanding of intervals and interval arithmetic. For example, ``sign(x^2+sin(x)+2) => pnz``.

It would be great to fix that, but it's not really a "bug", but "known limitation". In the ``gamma`` example, ``und`` is "correct" in the best-effort sense, because it includes the ``zero`` case.


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**[bugs:#4758] limits of the form gamma\(ind\)**

**Status:** open
**Group:** None
**Labels:** limit gamma 
**Created:** Sat Jun 06, 2026 06:55 PM UTC by Barton Willis
**Last Updated:** Sat Jun 06, 2026 06:55 PM UTC
**Owner:** nobody


Should be `ind`, not `und`:

~~~
(%i1)	limit(gamma(4+sin(x)),x,inf);
(%o1)	und
~~~

Related bug:  should be 0, not `und`
~~~
(%i2)	limit(gamma(4+sin(x))/x,x,inf);
(%o2)	und
~~~


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