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Jens-Peer Kuska <kuska at informatik.uni-leipzig.de> wrote: > and your teachers have not told you that Exp[x] > grow stronger than any negative power can decay ? Perhaps they have told him that. (I certainly hope so!) And so perhaps Ronny already knew that the limit is Infinity, and just wondered why Mathematica couldn't evaluate such a simple limit. First, let me note that version 5 has no problem evaluating that limit. But for version 4.2, Ronny, look at this: In:= Limit[E^n/n^3, n -> Infinity] Out= Limit[E^n/n^3, n -> Infinity] (* That's what you were complaining about. *) (* The line below loads an add-on package. *) In:= << "Calculus`Limit`" In:= Limit[E^n/n^3, n -> Infinity] Out= Infinity But one reason I don't like the above method is that that add-on package has quite a few quirks itself. In this particular case though, it helped. David Cantrell > Ronny Mandal wrote: > > I am trying to find the limit of the following expression : > > > > (E^n / n^3), n is growing to pos. infinity. But Mathematica 4.2 only > > yield the expression in return! And it shipped with no comprehensive > > doc, since it is a student version. > > > > Any suggestions?