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Topic: Does this imply that lim x --> oo f'(x) = 0?
Replies: 18   Last Post: May 26, 2013 1:28 AM

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 William Elliot Posts: 2,637 Registered: 1/8/12
Re: Does this imply that lim x --> oo f'(x) = 0?
Posted: May 24, 2013 10:50 PM

On Fri, 24 May 2013, baclesback@gmail.com wrote:
> On Friday, May 24, 2013 3:28:09 AM UTC-4, William Elliot wrote:

> > > > Suppose f:[0, oo) --> R is increasing, differentiable and has a
> > > > finite limit as x --> oo. Then, must we have lim x --> oo f'(x) =
> > > > 0? I guess not, but couldn't find a counter example.

Give it up, counter examples have been presented.

Date Subject Author
5/23/13 steinerartur@gmail.com
5/23/13 Robin Chapman
5/23/13 David C. Ullrich
5/23/13 Bart Goddard
5/23/13 steinerartur@gmail.com
5/23/13 William Elliot
5/24/13 steinerartur@gmail.com
5/24/13 Bacle H
5/24/13 William Elliot
5/24/13 Bacle H
5/24/13 William Elliot
5/24/13 Graham Cooper
5/24/13 Graham Cooper
5/25/13 steinerartur@gmail.com
5/25/13 Graham Cooper
5/26/13 Bacle H
5/26/13 Bacle H
5/24/13 William Elliot
5/24/13 Graham Cooper