vaCalculator
ver 0.1
User Guide
vaCalculator
is traditional but powerful crossplatform calculator.
Development
is in beta stage so the program may not work as expected or as described
here.
It works with following configuration:
python 2.3.5
wxPython 2.6.1
Numeric 23.8
SciPy_complete 0.3.2
It may work with other versions of particular software.
How To Use
For all calculating modes the keyboard on screen is almost useless at moment: calculator can be controlled only by directly typing into calculating window.
“C” or Clear is functional: it clears variables memory and screen too.
MODE: Normal
In this mode calculator will evaluate or calculate every single line after pressing Enter. Result will be displayed at the end of the current line and also it will be carried onto the next line as default value for new calculation.
GRAD/RAD: current values are evaluated as radians. If you need to enter grad values then use radians() function (see example).
It is possible to use additional variables too. If you know about python programming language then you should know: it is almost true python commandline evaluator :)
Integration will return two values: [x,y] First one is result and second is measured error (?).
You can pick up only result: IT(expr)[0]
Examples
1 + 2.1415 ( ...and press Enter)


3.1415 * sin(radians(90))/(pi**2) 

IT(2*sin(x),0,pi) 

MODE: Algebra
From chooser select ALGB and Linear System.
Insert 2 or 3 “level” linear system, onto last line type only question mark and press Enter.
Example
1x + 1y  1z = 9 6x + 6y  1z = 17 14x  7y 2z = 42 ? (... and press Enter) 

MODE: Algebra
From chooser select ALGB and Determinant
In this mode determinant will be calculated. Insert space separated values, into the last line insert question mark and press Enter:
3 7 4 6 4 2 6 7 7 ? (... and press Enter)

