Re: MuPAD bugs: series can return 6 terms only

From: Christopher Creutzig (ccr_at_mupad.de)
Date: 02/25/05 

Date: Fri, 25 Feb 2005 12:52:27 +0100

Vladimir Bondarenko wrote:

>>series(sech(z), z= infinity, 199);
>
>
> 2/exp(z) - 2/exp(z)^3 + 2/exp(z)^5 - 2/exp(z)^7 + 2/exp(z)^9 -
> 2/exp(z)^11 + O(1/exp(z)^13)

  In case anyone is looking for a workaround: Setting ORDER:=199 instead
of supplying the third argument to series does help. Note that for
generalized series as the one presented here, the notion of "ORDER" is
(necessarily, in general) a bit fuzzy; in fact, with ORDER=40, I get a
series expansion with 79 terms.

regards,
        Christopher Creutzig