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Re: MathKernel Crash while calculating limit

• To: mathgroup at smc.vnet.net
• Subject: [mg75607] Re: MathKernel Crash while calculating limit
• From: "Nasser Abbasi" <nma at 12000.org>
• Date: Sun, 6 May 2007 01:54:54 -0400 (EDT)
• References: <f1hla2$om6$1@smc.vnet.net>
• Reply-to: "Nasser Abbasi" <nma at 12000.org>

"Ulrik Günther" <ulrik at 42degreesoffreedom.com> wrote in message 
news:f1hla2$om6$1 at smc.vnet.net...
>
> Hi everybody,
>
> during a calculation of a limit, MathKernel crashed. I tried the
> following:
>
> Limit[((-2^(n - 1)*M)/(n!*L^(n - 1)))^(n/2), n -> (infinity)]
>
> After some seconds, Mathematica produced a beep, then I got a crash
> report concerning MathKernel. I attached a full crash log to this
> mail. Oh, and I'm using Mathematica (for Students) 5.2 on a PowerBook
> G4 running MacOS 10.4.9.
> Also tried calculating that limit without the constants L and M, this
> time it worked.
>
> Maybe somebody can explain that behaviour to me...
>
> Thanks in advance,
>
> ulrik
>

no problem on Mathematica 6:

In[23]:= Limit[(((-2^(n - 1))*M)/(n!*L^(n - 1)))^(n/2), n -> infinity]
Out[23]= (-((2^(-1 + infinity)*L^(1 - infinity)*M)/Gamma[1 + 
infinity]))^(infinity/2)

You need to upgrade, Mathematica 6 is VERY FAST !

Nasser