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Re: how to display the value of w after using do?
*To*: mathgroup at smc.vnet.net
*Subject*: [mg111007] Re: how to display the value of w after using do?
*From*: Patrick Scheibe <pscheibe at trm.uni-leipzig.de>
*Date*: Fri, 16 Jul 2010 06:59:20 -0400 (EDT)
Hi,
a Do Loop never returns anything as long as you don't use return. You
can find this information in the "MORE INFORMATION" section of the help
of Do.
However, the assignment of w[n][k] is done. Just check what ?w gives.
If you want to "see" the values of your assignment explicitely, you
could just use a Table:
n = 5;
Table[w[n][k] =
Exp[z0[n][k]^2] Sqrt[
Pi] 2^(n - 1) n!/(n HermiteH[n - 1, z0[n][k]])^2, {k, n}]
Hope this helps,
Cheers
Patrick
On Fri, 2010-07-16 at 05:15 -0400, ynzhang at mech.uwa.edu.au wrote:
>
> Dear Sir/Madam,
>
> I am a beginner of Mathematica.
> I just wrote a Notebook(nb) in Mathematica to in order to obtain the
> Gauss-Hermite weights as follows:
>
> n = 5;
> Do[w[n][k] = Exp[z0[n][k]^2] Sqrt[Pi] 2^(n - 1) n! /
> (n HermiteH[n - 1, z0[n][k]])^2, {k, n}];
> I press shift & Enter to Evalutate. The results come out with only
>
> In[1]:= Do[w[n][k] = Exp[z0[n][k]^2] Sqrt[Pi] 2^(n - 1) n! /
> (n HermiteH[n - 1, z0[n][k]])^2, {k, n}];
>
> without Out[1].So I dont know if w comes out or not at last . If so,
> there should be a row or column vector shown in Out[1].
>
>
> Thank you very much! I am looking forward to hearing from you soon!
>
> Regards,
> Yanni
>
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