Re: Strange behavior: random and plot
- To: mathgroup at smc.vnet.net
- Subject: [mg102750] Re: Strange behavior: random and plot
- From: Steven Siew <stevensiew2 at gmail.com>
- Date: Wed, 26 Aug 2009 07:42:28 -0400 (EDT)
- References: <h6o75c$fv2$1@smc.vnet.net>
The problem goes away if you write this
ran[x_] := Random[Real, x]
qqq[x_] := ran[x] - ran[x]
Plot[qqq[x], {x, 0, 3}]
On Aug 22, 5:36 pm, Don Krug <kr... at nku.edu> wrote:
> Hi group. I am new here and discovered some strange behavior (to me.)
> Hope someone can help.
>
> I will be teaching a course on programming with Mathematica this
> semester and so you may hear from me some more.
>
> I define
>
> ran[x_]:=Random[Real,x]
>
> If I evaluate ran[3]-ran[3] I get a non-zero result as expected.
>
> But if I do
>
> Plot[ ran[x]-ran[x] ,{x,0,3}]
>
> I get an empty axes system. I assume it is the plot of the zero fu=
nction.
>