PocketCAS v1.0.2

PocketCAS v1.0.2 (Freeware)
Requirements: PocketPC 2003(SE), WM5, WM6
Overview: Solving advanced mathematical problems made easy

PocketCAS is a free interface to the open-source Computer Algebra System giac/xcas.
xcas enables you to quickly solve complex algebraic problems, e.g. symbolic and numeric integration and derivation of non-trivial functions, solving differential equations etc. It has also a huge support for problems of linear algebra, like solving linear equation systems, multiplying and inverting matrices, finding eigenvalues (and eigenvectors, of course) and much more. If you do statistics or number theory, you will like xcas' great functionality in those areas, too!
Built-in TeX output

PocketCAS has the option to automatically use the output of xcas to generate beautiful formula images using mimeTeX. Just enter an expression and you will get the result in the same formatting you would find in a mathematical textbook!

For example, other Computer Algebra Systems would output the following result to the command integrate(sin(x)*cos(x),x):

(sin(x))^2/2

With PocketCAS, you will see:

(this is VGA output, on your PDA it will look smaller and even smoother!)
Simple input method for faster solutions

PocketCAS contains a fully-customizable, easy to use mathematical keyboard for quick input of most mathematical functions. You can even assign images to displayed on a button rather than mere text!

Therefore, PocketCAS is as simple to use as a pocket calculator, but provides you with the functionality of a full-blown CAS - in your pocket, wherever you take your PDA with you!

Missing a function or a macro? Simply add it to the keyboard which is stored in a human-editable XML-file!

Current Features

* Internally uses giac/xcas, a very powerful Computer Algebra System with lots of functions
o Solving almost all problems the desktop version of xcas can solve, at a decent speed!
o Quick computation of results: xcas needs as little as 3 to 5 seconds to solve most problems!
o Even though the CAS has a huge functionality, you can still use it only as a simple and easy-to-use free scientific calculator for your PDA. xcas also supports unit/metrics conversion, but this feature has not been implemented into the PocketCAS interface yet.
* Renders output using mimeTeX to generate beautiful formula images
o Different MimeTeX rendering modes (with/without anti-aliasing) to generate formula images that look best on your device. Images too large for your device's screen will be scaled down automatically (but can also be scrolled in full size)
* Very reactive and smooth user interface
o Fully customizable keyboard, configured with an XML file. On WM5+ devices, Buttons may contain images (even with alpha blending) rather than pure text, too.
o Support for any screen size, including landscape, VGA and square screens! MimeTeX will be set up to render larger images automatically, improving visual quality even further
* Small memory footprint: Less than 1 Megabyte of RAM for the interface application (xcas takes some more RAM, but it will run only for some seconds), and only about 3 Megabytes internal storage required

Planned Features

* Possibility to run xcas as a server to reduce delay caused by starting up the xcas executable for every computation, using Windows Events (I just have to figure out how to use Windows Events in .NET Compact Framework - if you know something about that -> contact me!)
* Interactive command history with easy editing functionality
* Scripting mode to edit and create XCAS scripts/functions
* A built-in reader for the xcas help file to provide you with a quick reference and examples for every function you use, as well as a possibility to search for a specific command (especially a command list with a built-in reference)
* Means to plot 2D and 3D functions, either via providing an interface to a Windows Mobile port of gnuplot (there already is a port of gnuplot 3.7 available here), or via a self-written plotting feature

[break]
Changelog

Version 1.0.2 Greek Edition - 29.8.2008

* Added images for the following functions: x^(-1), x^y, e^x, sum, product
* Improved images for the following functions: sqrt, integral, pi
* Some internal optimizations regarding the XML keyboard. Please tell me whether you notice changes in performance and memory consumption (good or bad)
* Greek keys and keys for single-letter variables for easier variable input (located in the "helper" section)
* Added more mathematical symbols to the keyboard rather than mere text. This benefits WM 2003 users especially, as they now get some icons rather than mere text buttons.
* Improved options for keyboard font sizes (different font sizes for individual sections and buttons)
o text size of many keyboard buttons has been improved for even better usability

Version 1.0.1 - 12.8.2008

* Changed integration function from int(...) to integrate(...) in keyboard.xml. This shows an integration symbol in TeX output.
* Added images for the following functions: sqrt, approx, backspace, newline

Version 1.0.0 - 6.8.2008

* First public release
* Internally uses giac/xcas, a very powerful Computer Algebra System with lots of functions
o Solving almost all problems the desktop version of xcas can solve, at a decent speed!
o Quick computation of results: xcas needs as little as 3 to 5 seconds to solve most problems!
o Even though the CAS has a huge functionality, you can still use it only as a simple and easy-to-use free scientific calculator for your PDA. xcas also supports unit/metrics conversion, but this feature has not been implemented into the PocketCAS interface yet.
* Renders output using mimeTeX to generate beautiful formula images
o Different MimeTeX rendering modes (with/without anti-aliasing) to generate formula images that look best on your device. Images too large for your device's screen will be scaled down automatically (but can also be scrolled in full size)
* Very reactive and smooth user interface
o Fully customizable keyboard, configured with an XML file. On WM5+ devices, Buttons may contain images (even with alpha blending) rather than pure text, too.
o Support for any screen size, including landscape, VGA and square screens! MimeTeX will be set up to render larger images automatically, improving visual quality even further
* Small memory footprint: Less than 1 Megabyte of RAM for the interface application (xcas takes some more RAM, but it will run only for some seconds), and only about 3 Megabytes internal storage required

More Info:

Code

http://pocketcas.com/?Home

Download Instructions:
http://rapidshare.com/files/14161462...tCAS_1.0.2.zip