#11164: Integral of sin(x)/x gives false result.
--------------------------+-------------------------------------------------
Reporter: benreynwar | Owner: burcin
Type: defect | Status: needs_info
Priority: major | Milestone:
Component: calculus | Keywords:
Work_issues: | Upstream: Fixed upstream, in a later stable
release.
Reviewer: | Author:
Merged: | Dependencies:
--------------------------+-------------------------------------------------
Comment(by kcrisman):
By the way, achrzesz has a great one-liner for
[http://ask.sagemath.org/question/6/how-do-i-understand-the-result-of-
symbolic a related question]:
{{{
maxima('integrate(diff((exp(x)-1)/x,x),x),gamma_expand:true,factor').sage()
}}}
Though here it doesn't solve the problem, but maybe it will trigger
someone's memory as to another Maxima flag to set...
{{{
sage:
maxima('integrate(sin(x)/x,x,-1/1000000,1/1000000),gamma_expand:true').sage()
I*expintegral_ei(-1/1000000*I) - I*expintegral_ei(1/1000000*I) # currently
not translated into Sage, but see #11143
sage: a = I*Ei(-1/1000000*I)-I*Ei(1/1000000*I)
sage: a.n()
3.14159465358979
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11164#comment:7>
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 post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
