If you are looking around to download a free, powerful calculator, which is capable of plotting graphs and solving complex equations for XP, then your search ends here.
Microsoft Powertoys provides such a calculator for free download Powertoy from Microsoft Site.
This Calculator lets you create graphs, solve equations and comes packed with a whole bunch of other advanced features.
It’s free for XP , MediaCenter users.
Simply Download it, install it. Access it from
Start -> All Programs -> Powertoys for XP ->Powertoy Calculator.
For example a Sin Curve can be plotted on this calculator by filling in values for :
Sine wave: f(x)=sin(x)