Mathematical Software. Mathematical Research. Mathematical Education. Tvalx Products.

Compact Scientific Calculator 27 for Windows 98, Windows 2000, Windows Server (2000, 2003, 2008, 2012), Windows XP, Windows Vista, Windows 7, and Windows 8.

This is a product which can be found most useful by scientists, engineers, professors, and students. The calculator was designed with purpose to fit Netbooks and Notebooks with small display. Of course, the calculator can be used on laptop and desktop computers as well.

Price is $11.00

Compact Scientific Calculator 27 in Windows Vista :

Compact Scientific Calculator 27 in Windows XP with display 800x480 pixels (perfect fit for Netbook!):

This calculator follows classical approach when uncertainty of f(x) calculation is estimated by formula max|(derivative(f))|*|x*uncertainty(x)|, where maximum of function derivative is considered on interval [x-uncertainty(x), x+uncertainty(x)]. Thus sin(2*pi)=0+-1E-54 and sin(2*1E20*pi)=0+-1E-34. As we see, the resultâ€™s accuracy degrades with growth of argument, but such approach allows to preserve all trigonometry facts like sin(even number*pi+x)=sin(x).

In the default mixed mode the calculator treats numbers as integers wherever it is possible. For example, 32! have an integer result with 36 digits.

There are 10 variables (or constants) available for storing frequently used numbers.

All calculation results are reflected in History rich-text-box, which can be saved in file or printed.

Quick Start page is available in Help tab. There is an online support page as well. If you have questions, write to support@tvalx.com .

© 2008 Tvalx