DFPRINT _ _ _ _ _ _ _ _ _ _ _ _ switch

When dfprint is on, expressions in the differentiation operator df are printed in a more ``natural'' notation, with th e differentiation variables appearing as subscripts. In addition, if the switch noarg is on (the default), the arguments of the differentiated operator are suppressed.

examples:

operator f; 

df(f x,x); 

  DF(F(X),X); 


on dfprint; 

ws; 

  F  
   X


df(f(x,y),x,y); 

  F  
   Y


off noarg; 

ws; 

  F(X,Y)
        X