Re: HP48 vs TI-92

Subject: Re: HP48 vs TI-92
From: Al Arduengo <aardueng@LONESTAR.JPL.UTSA.EDU>
Date: Sun, 1 Sep 1996 09:18:43 -0500
In-Reply-To: <50bkl7$6d8@ousrvr3.oulu.fi>

Here is a little something for 92 owners. Try the following limit problem:


        -s*t
Lim    e    *t
t->inf ---------|s=s
           2
         s


ie The limit of exp(-s*t)*t/s^2 as t approaches infinity where s equals s.
Careful though. It nuked me in one case (I lost all memory) and gave a
mem error in another case. For your info, it is the "where" statement
that caused the problem. Change it to s=n and all is fine. Is this
problem apparent on all 92s or just mine?


Also, limits do not work well if the expression being limited involves a
product or quotient of mre than one variable. ie e^(-s*t) as t approaches
infinity returns undef where e^(-s+t) returns zero. Anyone know a way
around this?


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