#7748: Make incomplete gamma function symbolic
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Reporter: kcrisman | Owner: zimmerma
Type: defect | Status: needs_work
Priority: minor | Milestone: sage-4.3.3
Component: symbolics | Keywords:
Author: Flavia Stan | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by burcin):
Replying to [comment:8 zimmerma]:
> Consider also the following:
{{{
sage: gamma_inc(2, 5.)
0.0404276819945128
sage: gamma(2, 5)
1
}}}
We should write a python function wrapping `gamma_inc` and `gamma`,
similar to the provided for `psi()` in #6961.
The fact that `gamma()` accepts two arguments at the moment is a bug that
I introduced in #7490. Looking at the code, it also doesn't handle the
`prec` parameter correctly. I'll upload a patch with a wrapper `gamma()`
function and a fix for the `prec` issue.
Replying to [comment:7 fstan]:
> Integration looks more complicated.
Integration cannot be handled with a custom method in symbolic functions.
The patches attached to #6465 should make this easier.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7748#comment:9>
Sage <http://www.sagemath.org>
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