[Maxima-bugs] [maxima:bugs] #4351 absolute value, integral

[dan h. <zm...@us...>]

But now this is pretty bad. All the following also give 0.0

~~~
~~~
[romberg(abs(x),x,-11,11),romberg(sqrt(x^2),x,-11,11),romberg(signum(x)*x,x,-11,11)];
~~~
~~~


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**[bugs:#4351] absolute value, integral**

**Status:** open
**Group:** None
**Labels:** integrate 
**Created:** Tue Aug 20, 2024 07:38 PM UTC by dan hayes
**Last Updated:** Wed Aug 21, 2024 03:06 AM UTC
**Owner:** nobody


"branch_5_44_base_231_g5c411f69f",timestamp="2021-01-12 23:51:42",host="x86_64-w64-mingw32",lisp_name="SBCL",lisp_version="2.0.0",maxima_userdir="C:/Users/zmth1/maxima",maxima_tempdir="C:/Users/zmth1/AppData/Local/Temp",maxima_objdir="C:/Users/zmth1/maxima/binary/branch_5_44_base_231_g5c411f69f/sbcl/2_0_0",maxima_frontend="wxMaxima",maxima_frontend_version="20.12.2-DevelopmentSnapshot_MSW_OpenMP201511+Locks")

Not positively sure this is a bug but anyway:
~~~
~~~
[integrate(abs(x),x,-1,1),absint(abs(x),x,-1,1)];
~~~
~~~
For the first one it seems to ignore the abs, absolute value prefix and gives wrong answer of 0, no warnings,no comments etc. Second one absint in my help file is supposed to be a function . Doesn't say i have to load fourier or anything like that but it just gives a repeat of the exact words of the function absint(...) without doing any evaluation. Am i missing something or do later versions of maxima do the same thing ?



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