Replicating MathCAD functions

As the title says I'm looking for a way to replicate functions from MathCAD in Grasshopper.  If you visit http://yetanotherscript.wordpress.com/ and look 3/4 of the way down the page there is one really long image with examples of MathCAD modeling.  My idea of it so far would be creating a rectangle then copying a series in the z, divide the curves into points and use another point to affect the curvature of profiles.  Any ideas?