While trying to learn Maxima, I was going through the manual and came to
the ratdiff function.
It doesn't seem to work the same as what the manual shows.
I am using Maxima at
http://www.my-tool.com/mathematics/
and am using the manual from
http://www.ma.utexas.edu/maxima/maxima_11.html#IDX322
the manual shows:
(C1) (4*X**3+10*X-11)/(X**5+5);
3
4 X + 10 X - 11
(D1) ----------------
5
X
(C2) MODULUS:3$
(C3) MOD(D1);
2
X + X - 1
(D3) --------------------
4 3 2
X + X + X + X + 1
(C4) RATDIFF(D1,X);
5 4 3
X - X - X + X - 1
(D4) ------------------------------
8 7 5 4 3
X - X + X - X + X - X + 1
One problem is -- the denominator of the (c1) line has a +5 that
doesn't show up in (D1)
but more importantly mod doesn't work that way.
and I can't get ratdiff to do anything like what is shown.
Just thought I would point these things out as I find them.
Doug