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 Forum index » Advanced Topics » Additional Software (PETs, n' stuff) » Unsorted
YACAS Computer Algebra System (CAS)
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brad_chuck

Joined: 15 Aug 2005
Posts: 284
Location: Appalachian Mountains

PostPosted: Sat 20 Dec 2008, 00:06    Post_subject:  YACAS Computer Algebra System (CAS)
Sub_title: Open source Maple or Mathematica type program.
 

Great program. Use it as a simple calculator...

Code:
In>4+3
Out>7


Or more... it can handle almost anything you can throw at it. For example if you forgot what the fist derivative of sin(x)^-1 was...

Code:
In>D(x)(Sin(x)^-1)
Out>-Cos(x)*Sin(x)^(-2)



From the YACAS home page.

Quote:
YACAS is an easy to use, general purpose Computer Algebra System, a program for symbolic manipulation of mathematical expressions. It uses its own programming language designed for symbolic as well as arbitrary-precision numerical computations. The system has a library of scripts that implement many of the symbolic algebra operations; new algorithms can be easily added to the library. YACAS comes with extensive documentation (hundreds of pages) covering the scripting language, the functionality that is already implemented in the system, and the algorithms we used.
yacas-1.2.2.pet
Description  YACAS 1.2.2
pet

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Filename  yacas-1.2.2.pet 
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aarf

Joined: 30 Aug 2007
Posts: 3620
Location: around the bend

PostPosted: Sat 20 Dec 2008, 03:43    Post_subject:  

Does it display pretty multi colored 3D graphical representations like mathematica does?
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brad_chuck

Joined: 15 Aug 2005
Posts: 284
Location: Appalachian Mountains

PostPosted: Sat 20 Dec 2008, 09:48    Post_subject:  

nope.

But GNU Plot does. Home page
http://www.gnuplot.info/

Dotpets
http://www.murga-linux.com/puppy/viewtopic.php?search_id=1474324179&t=19807
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jani


Joined: 05 Jan 2008
Posts: 30
Location: Hungary

PostPosted: Wed 24 Dec 2008, 14:00    Post_subject:  

Hi,
i installed the package without any error message.
When a start the program i get this lines in the program window:

"yacasinit.ys(1) : File not found

yacasinit.ys(1) : File not found

yacasinit.ys(1) : File not found

This is Yacas version '1.2.2'. ." .. and so on.

And when i type a simple command for example 2*3 the answer is:
CommandLine(1) : Error parsing expression, near token *

So i can't use for any expression (+,-, /,*, D(X) .....)

(my config: puppy linux 4.00 full install p3/700Mhz 256 ram)

have you got and idea what is the problem?
thank you

MERRY CHRISTMAS FOR ALL PUPPY FAN
[/quote]
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jani


Joined: 05 Jan 2008
Posts: 30
Location: Hungary

PostPosted: Thu 25 Dec 2008, 07:05    Post_subject:  

the solution is:
insert this: "cd /share/yacas"
in the /bin/run-yacas script
before the "rxvt -e yacas" line
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hayden


Joined: 13 Sep 2006
Posts: 63
Location: New Hampshire USA

PostPosted: Fri 06 Jan 2012, 14:29    Post_subject:  

...and then to run yacas from the command line you have to type run-yacas. (Thanks for the PET -- yacas is cool!-)
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