"Source: Text/Commut/RngDiff.text";
"Line: 3542";
"Date: Wed Sep 19 23:00:01 2018";
"Main: Thu May 25 10:02:38 2023";
// original file: Text/Commut/RngDiff.text, line: 3542
// Example: H118E63 ()
print "Example: H118E63";
ei := GetEchoInput();
SetEchoInput(true);
F<z> := RationalDifferentialField(Rationals());
R<D> := DifferentialOperatorRing(F);
SymmetricPower(D^2, 3);
SymmetricPower(D^3-1, 2);
SetEchoInput(ei);
