Series of LaguerreL problem
- To: mathgroup at smc.vnet.net
- Subject: [mg72785] Series of LaguerreL problem
- From: Arturas Acus <acus at itpa.lt>
- Date: Fri, 19 Jan 2007 02:09:38 -0500 (EST)
Dear Group,
Using 5.2 version and looking at the help browser on LaguerreL[]
function I see the following line
In[1]:=
Series[LaguerreL[n, z], {z, 0, 4}]
Out[1]:=
SeriesData[z, 0, {LaguerreL[n, 0], -LaguerreL[-1 + n, 1, 0],
LaguerreL[-2 + n, 2, 0]/2, -LaguerreL[-3 + n, 3, 0]/6, LaguerreL[-4 + n,
4, 0]/24}, 0, 5, 1]
Does it have any sense? Certainly, I can call FunctionExpand[] on the
Normal[%]
The behaviour of version 5.0 was different and I suspect bug here.
Explanation/motivation or bug confirmation would be wellcome.
--
Arturas Acus <acus at itpa.lt>