Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: Undefined vs zero second derivative
Replies: 13   Last Post: Oct 19, 1998 11:14 PM

 Search Thread: Advanced Search

 Messages: [ Previous | Next ]
 Lou Talman Posts: 876 Registered: 12/3/04
Re: Undefined vs zero second derivative
Posted: Oct 14, 1998 11:42 AM
 Plain Text Reply

Ron Selke asks:

> So I put it out here: If I gave you two graphs, each with a point of
> inflection, one where f'' = 0 and one where f'' is undefined, could you

> tell which was which?

I don't know whether Ron can or not. I can't. Consider the curve

y = x Abs[x]

at the origin.

--Lou Talman

Date Subject Author
10/11/98 Ron Sellke
10/14/98 Lou Talman
10/14/98 penn.howard
10/14/98 Matthias Kawski
10/15/98 Bob Dillon
10/15/98 Matthias Kawski
10/15/98 Matthias Kawski
10/17/98 CalcPage@aol.com
10/18/98 Paul Goodman
10/19/98 Matthias Kawski
10/19/98 Paul Goodman
10/18/98 Patrice Lennae Conrath
10/18/98 Geoff Hagopian
10/19/98 David A. Olson

© The Math Forum at NCTM 1994-2018. All Rights Reserved.