Diff

   A command line derivitive utility.  Just type diff followed by the
expression of which you'd like the derivitive.  Any differentiable
expression containing numbers, variables, constants, operators, and
pre-defined functions will work.
   Along with the derivitive, Diff will provide a simplified expression.
Most simplification rules are used, with the exceptions of inverse
functions and trigonometric theorems.
   This utility is obviously much more limited than a math cad system
like Mathematica, but its much smaller and cheaper.  Speaking of money,
please type diff with no arguments for registration information.

   Please send comments to MLP4796@ZEUS.TAMU.EDU.