Find and prove

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- Mar 15th 2013, 05:21 PMKanwar245Proof of a limit of an infinite sequence
Find and prove

- Mar 15th 2013, 05:21 PMKanwar245Re: Proof of a limit of an infinite sequence
I'm thinking of rationalizing it first, also I can see that the limit approaches 0

- Mar 15th 2013, 05:24 PMHallsofIvyRe: Proof of a limit of an infinite sequence
That sounds good- multiply by

- Mar 15th 2013, 05:33 PMKanwar245Re: Proof of a limit of an infinite sequence
yes and it becomes

- Mar 15th 2013, 06:06 PMShakarriRe: Proof of a limit of an infinite sequence
From

You can show that this is always less than

and always greater than

Using the sandwich theorem show that a_{n}converges to zero. - Mar 15th 2013, 06:32 PMProve ItRe: Proof of a limit of an infinite sequence
- Mar 15th 2013, 06:44 PMShakarriRe: Proof of a limit of an infinite sequence
Oh yes you could do it that way (Clapping)

- Mar 15th 2013, 07:36 PMKanwar245Re: Proof of a limit of an infinite sequence
right but when proving, for all epsilon greater than 0, what N would I choose so that

If i try to square it, epsilon gets squared too... - Mar 15th 2013, 07:53 PMProve ItRe: Proof of a limit of an infinite sequence
- Mar 15th 2013, 08:18 PMKanwar245Re: Proof of a limit of an infinite sequence
Right so we have this:

Now from this point on, if I try to isolate n, at some point I will have to square which will yield ... - Mar 15th 2013, 09:59 PMProve ItRe: Proof of a limit of an infinite sequence
- Mar 16th 2013, 08:03 AMKanwar245Re: Proof of a limit of an infinite sequence
- Mar 16th 2013, 04:05 PMProve ItRe: Proof of a limit of an infinite sequence
- Mar 16th 2013, 04:06 PMKanwar245Re: Proof of a limit of an infinite sequence
Okay Perfect!