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The Maxima on-line user's manual

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Listdummyvars Calculator

Listdummyvars

-- Option variable: listdummyvars Default value: true

When listdummyvars is false, "dummy variables" in the expression will not be included in the list returned by listofvars. (The meaning of "dummy variables" is as given in freeof. "Dummy variables" are mathematical things like the index of a sum or product, the limit variable, and the definite integration variable.) Example:

listdummyvars: true;
 listofvars (

          (%i1) listdummyvars: true$
          (%i2) listofvars (sum(f(i), i, 0, n));
          (%o2)                        [i, n]
          (%i3) listdummyvars: false$
          (%i4) listofvars (sum(f(i), i, 0, n));
          (%o4)                          [n]

(%o1)                                true
(%i2) 

Listdummyvars Example

Related Examples

listdummyvars

? listdummyvars;

Calculate

listdummyvars

? listdummyvars;

Calculate