maxima-bugs

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

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

---

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

**Status:** open
**Group:** None
**Created:** Tue Aug 20, 2024 07:38 PM UTC by dan hayes
**Last Updated:** Tue Aug 20, 2024 07:38 PM 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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[Maxima-bugs] [maxima:bugs] #4351 absolute value, integral

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

ok after i did load(fourie)  the absint(...) Did do the function but again wrong answer of 0 and no comments or anything)


---

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

**Status:** open
**Group:** None
**Created:** Tue Aug 20, 2024 07:38 PM UTC by dan hayes
**Last Updated:** Tue Aug 20, 2024 07:38 PM 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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[Maxima-bugs] [maxima:bugs] #4351 absolute value, integral

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

- **labels**:  --> integrate
- **Comment**:

Agreed, **integrate** should return at the very least return a noun-form in this case.



---

**[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:** Tue Aug 20, 2024 07:51 PM 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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[Maxima-bugs] [maxima:bugs] #4351 absolute value, integral

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

~~~
[load(fourie),integrate(sqrt(x^2),x,-1,1),absint(sqrt(x^2),x,-1,1),integrate(signum(x)*x,x,-1,1),absint(signum(x)*x,x,-1,1)  ]  ;
~~~
All give 0,no comments nor anything etc.


---

**[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:** Tue Aug 20, 2024 08:42 PM 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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[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)];
~~~
~~~


---

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

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

Using Maxima 5.47.0,  these bugs seem to be fixed:
~~~
(%i1)	load(fourie)$

(%i2)	integrate(abs(x),x,-1,1);
(%o2)	1

(%i3)	absint(abs(x),x,-1,1);
(%o3)	1

(%i4)	romberg(abs(x),x,-11,11);
(%o4)	121.0

(%i5)	romberg(sqrt(x^2),x,-11,11);
(%o5)	121.0

(%i6)	romberg(signum(x)*x,x,-11,11);
(%o6)	121.0
~~~
Could you try installing the latest Maxima and trying again?



---

**[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 03:31 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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[Maxima-bugs] [maxima:bugs] #4351 absolute value, integral

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

But strangely enough the following give correct answer.
**``**
[rombergmin:4,romberg(abs(sin(x)),x,-1,1),romberg(sqrt(sin(x)^2),x,-1,1)
,romberg(signum(sin(x))*sin(x),x,-1,1)];

while replacing sin(x) by x or x^3 all gave wrong answer of 0. But plain integrate(...) or absint(...) all gave wrong answer but 
~~~
[load(fourie),absint(signum(sin(x))*sin(x),x,-1,1) ,"ck"=ev(2*integrate(sin(x),x,0,1),numer) ]  ;
~~~
Did not give answer 0 but gave a positive wrong answer and can one explain this;
~~~
[ev(absint(sqrt(sin(x)^2),x,-1,0),numer),ev(absint(sqrt(sin(x)^2),x,0,1)
,numer)];
~~~
both gave different positive answers with of course the 2nd one correct.


---

**[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 11:24 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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[Maxima-bugs] [maxima:bugs] #4351 absolute value, integral

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

to Barton Williams. ok i posted that last before i saw your latest post. Anyway with regard to that should i uninstall my present version of maxima first ? or just what is best way to do that and not waste a lot of diskspace.


---

**[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 11:33 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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[Maxima-bugs] [maxima:bugs] #4351 absolute value, integral

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

As far as I know, regardless of your operating system there is no requirement to uninstall Maxima before installing a new Maxima version.  You can have multiple versions of Maxima installed and you can even run them simultaneously. 

If disk space is short, you can either delete the old version or install a new version on a flash drive (at least the last I tried, this works).  

Of course if you have tweaked the Maxima source code or have appended your own files to Maxima, you'll need to manually preserve these before deleting Maxima. 

I'm not sure about Maxima initialization files--if you have something important in these files, be safe and copy them before deleting. 

If for some reason, the new version isn't satisfactory,  you can download and install your previous version.  Thus there isn't much risk in deleting an old version and installing a new. 


---

**[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 11:43 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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[Maxima-bugs] [maxima:bugs] #4351 absolute value, integral

[Raymond T. <rt...@us...>]

- Description has changed:

Diff:

~~~~

--- old
+++ new
@@ -2,8 +2,8 @@
 
 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 ?

~~~~

- **Comment**:

Consider using the preview button to see what your message looks like before saving/sending the message.  There's also a "Formatting Help" button with useful information.  I have to use that fairly often because I can't remember.



---

**[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 12:41 PM 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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[Maxima-bugs] [maxima:bugs] #4351 absolute value, integral

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

to Barton Williams and/or whoever about installing new version of maxima.
The most difficult thing in installing new version or any version is in the edit configure,wxMaxima configuration. For example there is the setting
is 'Autowrap long lines:' but only choices of NO or text only but i want mainly to autowrap long lines of maxima output answers so how do i do that? I
do remember many years prior,could have been more than 20, when had that choice and definitely want it again for maxima output. How do i make that happen. Also seems is inconsistent and don't know where it stores the configuration files such as style.ini and more And likely because of that damn microsoft have no idea where it puts things . I think several places and how do i know which one it's using. I put style.ini in may current maxima where i store my personal  ....wxmx files for various worksheets i guess u call it but i am not sure whether it is using that style.ini or some other one which microsoft seems to put in some obscure deep path place maybe like users\...\sppdata and or whatever. i have no control nor idea . Last time i installed new version i would put the fonts for documentation and math fonts under style setting to what i wanted which is new times roman both at 12. Also did some other strange behavior which finally i got it stop How and why i don't know. And it worked occasionally but over and over again when pull up a new file it was set back to the default which is not what i wanted. i did all kinds of things to try and correct that usually without success but finally seems by now as far as i can tell all different *.wxmx  files do come up with the way i set it. i have no idea why or what happen in the meantime. So if i install a new version of maxima can i make it just use what i have now setup for so i won't have to go thru all this ridiculous crap again?



---

**[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 01:19 PM 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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