#18499: add documentation for symbolic series arithmetics
-----------------------------+----------------------------
Reporter: rws | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-6.8
Component: documentation | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
-----------------------------+----------------------------
It is undocumented that expressions containing series (that result from
operations with them) can be "expanded" by applying `series` again.
{{{
sage: (1/(1-x)).series(x, 3)+(1/(1+x)).series(x,3)
(1 + (-1)*x + 1*x^2 + Order(x^3)) + (1 + 1*x + 1*x^2 + Order(x^3))
sage: _.series(x,3)
2 + 2*x^2 + Order(x^3)
sage: (1/(1-x)).series(x, 3)*(1/(1+x)).series(x,3)
(1 + (-1)*x + 1*x^2 + Order(x^3))*(1 + 1*x + 1*x^2 + Order(x^3))
sage: _.series(x,3)
1 + 1*x^2 + Order(x^3)
}}}
GiNaC quote:
"...if you want to work with series, i.e. multiply two series, you need to
call the method ex::series again to convert it to a series object with the
usual structure (expansion plus order term)."
--
Ticket URL: <http://trac.sagemath.org/ticket/18499>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/d/optout.
