YACAS Computer Algebra System (CAS)

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brad_chuck
Posts: 286
Joined: Tue 16 Aug 2005, 03:47
Location: Appalachian Mountains

YACAS Computer Algebra System (CAS)

#1 Post by brad_chuck »

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

Code: Select all

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: Select all

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

From the YACAS home page.
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.

aarf

#2 Post by aarf »

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

brad_chuck
Posts: 286
Joined: Tue 16 Aug 2005, 03:47
Location: Appalachian Mountains

#3 Post by brad_chuck »


User avatar
jani
Posts: 30
Joined: Sat 05 Jan 2008, 23:01
Location: Hungary

#4 Post by jani »

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]

User avatar
jani
Posts: 30
Joined: Sat 05 Jan 2008, 23:01
Location: Hungary

#5 Post by jani »

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
Posts: 61
Joined: Thu 14 Sep 2006, 01:49
Location: New Hampshire USA

#6 Post by hayden »

...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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