       Re: What is the problem? There are no images and no wrong reports for

• To: mathgroup at smc.vnet.net
• Subject: [mg112326] Re: What is the problem? There are no images and no wrong reports for
• From: apjs64 <apjs64 at gmail.com>
• Date: Thu, 9 Sep 2010 04:24:03 -0400 (EDT)
• References: <i64kgr\$3al\$1@smc.vnet.net>

```On Sep 7, 4:02 pm, peter <justwanglun... at gmail.com> wrote:
> Hello Mathematica community, I really need some help....
> I realized there are some mistakes in this program, but I can't find
> out what it is,  I keep trying for weeks, still there are some
> problem, I never used Mathematica before
>
> a==Exp[(-2r^2)/3];
> b==BesselJ[0,(r*Sqrt[x^2+y^2])/0.8];
> c==r^2;
> d==5a;
> Plot[Abs[Integrate[r*b*a*Exp[-I(c+d)]dr,{r,0,=E2=88=9E}]]^2,{x,-0.0=
1,0.01},
> {y,-0.01,0.01}]
>
> =EF=BC=88I is Complex i=EF=BC=89

Hi Peter,

a = Exp[(-2 r^2)/3]

== is equivalence.

The Plot... line has a lot of problems. Break it down step by step,
get each inner component
working and then build it back up.

regards,

Jeremy

```

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