using sum

Hello


I am a novice with maxima and I am trying to study it.
Particularly I am interesting is it possible to operate
with indefinite sums in maxima, say to expand sum into series.
Something like this:

(C1) a:sum(exp(-(i+x)^(-2)),i,0,inf);

                                      1
                           INF   - --------
                              ====        2
                              \    (x + i)
(D1)                           >%E
                              /
                              ====
                        i = 0
(C2) taylor(a,x,0,5);

                                    1
                                  - --
                                     2
                                    x
(D2)/T/                         %E     + . . .
(C3) taylor(a,x,0,10);

TAYLOR unable to expand at a point specified in:
ERREXP1
 -- an error.  Quitting.  To debug this try DEBUGMODE(TRUE);)

It seems that expression (D2) is wrong.

-- 
Andrey V. Panov
panov@iacp.dvo.ru
http://canopus.iacp.dvo.ru/~panov/