Re: enquiry

• To: mathgroup at smc.vnet.net
• Subject: [mg89219] Re: [mg89170] enquiry
• From: "W_Craig Carter" <ccarter at mit.edu>
• Date: Thu, 29 May 2008 07:07:02 -0400 (EDT)
• References: <200805280844.EAA27103@smc.vnet.net>

```Hello Abubaker,
There are some syntax problems with your expression (y* is not a valid
variable, you have unbalanced parenthesis..)

However, after you work these syntax problems out, Table is what you
will want to use:

e.g.,
V[m_, n_] := KroneckerDelta[m, n] Exp[2 Pi I n (((j - 1/2)/2) Q)]
mat = Table[V[m, n], {m, 1, 6}, {n, 1, 6}];
MatrixForm[mat]

On Wed, May 28, 2008 at 4:44 AM, abubaker alshafee <bico98 at yahoo.com> wrote:
>
> Hi All
>
>  I am tryin to build a Matrix
>   Vmn =  Array[v, {m, n}]  with V equal to
>
> V = (-(y*  N[BesselK[13 I, 2 Pi n y*]]
>        Exp[(13 Pi)/2]] Exp[2 Pi I n (((j - 1/2)/2)
>         Q)] Exp[-2 Pi I m (((j - 1/2)/2) Q)]))
>    (1/(2 Q)) + KroneckerDelta[m, n]
>    (Sqrt[y] N[BesselK[13 I, 2 Pi m y]
>       Exp[(13 Pi)/2]])

```

• References:
• enquiry
• From: abubaker alshafee <bico98@yahoo.com>
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