TurboGraph2003 Macro
draws a square XY plot area from -2pi to 2pi
and graphs the VBA Math Functions in various combinations
as well as some new math functions created from the derived math functions defined in the VBA help
I wouldn't call TurboCAD a true math application,
but these VBA math functions can extend it's Math capabilities
I don't know why they are not already included.
There seems to be flaws in the derived math expressions for Inverse Secant, Inverse Cosecant, and Inverse Cotangent