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Re: Limit Question


I've never really liked Mathematica's handling of which functions may be 
passed assumptions, or may be used (effectively) in Assuming...

Assuming[a > 0, Limit[Exp[(-a)*t], t -> Infinity]]

0

Similarly,

Assuming[a < 0, Limit[Exp[(a)*t], t -> Infinity]]

0


I can't really answer the question, but I can offer those alternatives 
to get the assumed limit.
 
       Cheers,
          C.O.


Blimbaum, Jerry CIV NSWC PC wrote:
> Why do these give no output?
>
> Simplify[Limit[Exp[-a t],t->Infinity],a>0]
>
> and  same for
>
> Simplify[Limit[Exp[a t],t->Infinity],a<0]
>
> thanks...
>
> Jerry Blimbaum 
>
>
>
>
>   


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