- #1
lilypetals
- 12
- 0
Homework Statement
Determine whether the sequence converges or diverges. If it converges, find the limit.
an = e1/n
Homework Equations
The limit laws, adapted for sequences.
The Attempt at a Solution
I have the solution; I was just wondering if someone might explain it to me.
I would have initially guessed that the limit of this sequence is 0. Not being sure how to proceed, however, I plugged it into WolframAlpha to see the steps for this particular problem.
limn-infinity e1/n
Using the continuity of e1/n at n=infinity, write limn-infinity e1/n as elimn-infinity1/n;
The limit of a quotient is the quotient of the limits:
e1/limn-infinityn
The limit of n as n approaches infinity is infinity:
=1.
Now, that makes sense, if I consider that 1/n goes to 0 as n goes to infinity, and thus the power of e would be 0, making the limit equal to one. But I'm not clear on exactly how we got there.
First question: what does "using the continuity of e1/n at n=infinity mean?
Second question: If limn-infinity of n is infinity, why does 1/n become 0?