[Maxima-bugs] [maxima:bugs] #4635 one argument limit of linear comb of inf and minf

[Barton W. <wil...@us...>]

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**[bugs:#4635] one argument limit of linear comb of inf and minf**

**Status:** open
**Group:** None
**Created:** Thu Nov 20, 2025 07:21 PM UTC by Barton Willis
**Last Updated:** Thu Nov 20, 2025 07:21 PM UTC
**Owner:** nobody


This is wrong--Maxima needs to ask about the sign of `a-b`, not the sign of `a` and `b` separately:
~~~
(%i1) limit(a*inf + b*minf);
Is a positive, negative or zero?
p;
Is b positive, negative or zero?
n;
(%o1)                                 inf
~~~



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