File src/partialFraction.txt artifact f1283d1b2c part of check-in 5b6aa15923

% partial fractions
b:=(x+1)^2*(x+2);
a:=2/b;
pf (a, x);
c:=ws;
first (c)+second (c)+third (c);
off exp;
ws;
first (c)+second (c)+third (c);
end;