On Saturday, April 20, 2013 2:03:07 PM UTC-4, ManDay wrote: > I'd like to be able to derive in the following manner: > > x = var( "x" ); > J = function( "g",x ); > f = function( "f",g ); > > # like so > > x1 = var( "x1" ); > > f.diff( J( x1 ) ); > > which is the functional f derivate with respect to the value of J at x1. > Is this possible in a fashion at least similar to what I demonstrate above? > I'm not understanding enough of the internal workings of symbolic > expressions to modify "diff" so that it would do what I suggest, perhaps > someone has a clever idea. > > Thanks. >
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