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Education > Math Recreational > Re: A Lifeguard...
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Re: A Lifeguard Problem

by "Greg Neill" <gneillREM@[EMAIL PROTECTED] > Apr 6, 2008 at 10:04 PM

"Barry Schwarz" <schwarzb@[EMAIL PROTECTED]
> wrote in message
news:6iriv391mktkqhluj62j67e7ehf6b66ms6@[EMAIL PROTECTED]
>=20
> The total time is obviously the sum of the two times above.  What is
> the standard method for determining where a function has a local
> minimum?

Differentiate the function with respect to the=20
variable to be minimized and set the resulting
expression to zero.  Solve for the variable in
question.  That will yield maxima, minima, or
both (if there are multiple roots).  Technically,
they are called inflection points.  Check each=20
solution to determine what it is, or apply the=20
"second derivative test".
 




 12 Posts in Topic:
A Lifeguard Problem
RKL <maryjim@[EMAIL PR  2008-04-06 15:17:30 
Re: A Lifeguard Problem
hagman <google@[EMAIL   2008-04-06 14:25:36 
Re: A Lifeguard Problem
Mike <m.fee@[EMAIL PRO  2008-04-07 10:33:05 
Re: A Lifeguard Problem
Barry Schwarz <schwarz  2008-04-06 18:06:58 
Re: A Lifeguard Problem
"Greg Neill" &l  2008-04-06 22:04:20 
Re: A Lifeguard Problem
"[Mr.] Lynn Kurtz&qu  2008-04-07 02:17:14 
Re: A Lifeguard Problem
William Elliot <marsh@  2008-04-07 01:55:25 
Re: A Lifeguard Problem
William Elliot <marsh@  2008-04-07 02:11:57 
Re: A Lifeguard Problem
easonrevant <easonreva  2008-04-25 17:11:21 
Re: A Lifeguard Problem
RKL <maryjim@[EMAIL PR  2008-04-26 13:41:39 
Re: A Lifeguard Problem
easonrevant <easonreva  2008-04-26 20:08:04 
Re: A Lifeguard Problem
easonrevant <easonreva  2008-04-26 20:08:50 

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