STFMath   
by Slavko Ilic   

STFMath (ex SunCalculator) is a multipurpose math utility, suitable not only for students, but also for engineers, professors, or anyone interested in math. With STFMath it is possible to:
Graph Mode
 Draw Cartesian standard or parametric (Y = F1(K), X = F2(K)) and Polar functions.
 Draw Integral and Average
 Evaluate function
 Perform function analyze
 Calculate intersection of two functions
 Calculate and preview integral
 Calculate 1st derivative and average
 Draw and calculate equation of tangent or normal
 Save drawn graph as an image (bmp, wmf, jpg), or copy graph to clipboard and paste in external applications
 Insert textual labels into the graph, print graph or graph history, adjust graph attributes
 Build a table of values and publish it as HTML
 Prepare presentation using built-in MathPad, fully functional text editor
Calculators Mode:
 Perform complex numbers calculations
 Perform advanced matrix calculations with complex numbers support
 Perform calculations on geometric figures and objects with Geometry Calculator and Geometry units converter
 Replace ordinary looking system calculator with Scientific Calculator