// Sample program to demonstrate doing derivatives.
use derivatives.frink
use solvingTransformations.frink

showApproximations[false]
symbolicMode[true]

while (text = input["Enter expression: "] )
{
   thingy = parseToExpression[text]

   res = transformExpression[thingy]
   println[]
   println[res]
   println[]
   println[eval[res]]
}