Calculator Programs
Math
Dot Product v1.0This program will find the dot product of two vectors/points, u=(u1,u2) and v=(v1,v2)/ <u1,u2> and <v1,v2).
Trap Rule 2.0This program helps you find the integral under a curve using the trapezoidal rule.

Derivative Guess v1.0This program helps you find the limit/instantaneous rate of change/derivative of a function at a point. You put in the equation and xvalue and the program finds: the yvalue at that point; the average rate of change from .1 away, .01 away, and .001 away; from which you can make an estimate of the limit, instantaneous rate of change, or derivative at that point.

Science
SmallAngle Formula 1.0This Program does the smallangle formula for you. For use in
astronomy to find the diameters of planets. 
StarMag 1.0This program converts between the magnitudes and intensitiesof stars. It can also be used to convert between there differences.
