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Re: Re: Strange Manipulate+ContourPlot behavior

• To: mathgroup at smc.vnet.net
• Subject: [mg82109] Re: [mg82064] Re: Strange Manipulate+ContourPlot behavior
• From: Syd Geraghty <sydgeraghty at mac.com>
• Date: Fri, 12 Oct 2007 02:58:08 -0400 (EDT)
• References: <fei3de$qn1$1@smc.vnet.net> <200710110416.AAA21323@smc.vnet.net>

Not so weird...

In[]:= a = 0; b = 0; p = 0; (b (a - a p + b p))/(-2 a b (-1 + p) +  
a^2 p + b^2 p)

Out[]:= Indeterminate

Syd



Syd Geraghty B.Sc., M.Sc.
sydgeraghty at mac.com
San Jose, CA

On Oct 10, 2007, at 9:16 PM, Will Robertson wrote:

> On Oct 10, 5:44 pm, Yaroslav Bulatov <yarosla... at gmail.com> wrote:
>> Manipulate[
>>  ContourPlot[(
>>   b (a - a p + b p))/(-2 a b (-1 + p) + a^2 p + b^2 p), {a, 0, 1},  
>> {b,
>>     0, 1}], {p, 0, 1}]
>
> That is weird. Sticking in an Evaluate[] around the expression fixes
> the problem -- until the slider is first moved. I guess I'd just
> recommend avoiding p = 0 ... :)
>
> Will
>
>

• References:
  • Re: Strange Manipulate+ContourPlot behavior
    • From: Will Robertson <wspr81@gmail.com>