From basic math to precalculus, Microsoft Mathematics 4.0 helps you visualize and see mathematical concepts as you’ve never seen them before.
With the Microsoft Mathematics 4.0 free download, you get:

• A full-featured graphing calculator
• The Formulas and Equations Library
• The Triangle Solver
• The Unit Conversion tool
• Ink handwriting support

System requirements:

• Support upto Windows 7
• 500 MHz Pentium processor or equivalent (minimum)
• 256 MB of RAM (minimum)
• 800 x 600, 256 colors (minimum)
• Video card with 64 MG of video RAM
• 65 MB available disk space
• Microsoft .NET Framework 3.5 SP1

Download Microsoft Mathematics 4.0.