Starting with Windows 7, Microsoft added a new tool called the Math Input Panel, which is by far the geekiest program that comes standard with Windows. The old champ was Calculator with its Scientific, Programmer, and Conversion modes.
How to use the Math Input Panel on Windows
The Math Input Panel allows you to write well-formulated mathematical expressions and then insert them into other programs that support MathML or Mathematical Markup Language.
A few programs that support MathML are OpenOffice, LibreOffice, Calligra Suite, and Microsoft Office. The web browser with the best support for MathML is Firefox. All others require a plugin or don't support it at all (Chrome). So don't plan on embedding MathML code in your web pages!
The Math Input Panel supports many high school and college math, such as functions, numbers, letters, arithmetic, algebra, sets, geometry, probability and statistics, etc.
