Re: max and min
- To: mathgroup at smc.vnet.net
- Subject: [mg87467] Re: max and min
- From: dh <dh at metrohm.ch>
- Date: Fri, 11 Apr 2008 01:44:28 -0400 (EDT)
- References: <ftkbbo$b2u$1@smc.vnet.net>
Hi Ary,
you should post a simple example, otherwise it is not clear what
difficulties you face..
I assume that you have a function like e.g. Sin[1/t]. Obviously such a
function has many extrema. Therefore, we need to give a region. Then we
need the old trick of setting the derivative to zero and use e.g. Reduce:
Reduce[{D[Sin[1/x],x]==0,1/10<x},x]
hope this helps, Daniel
Ary Adilson Morales Alvarado wrote:
> Dear friends,
>
> How I can to obtain the maximum and minimum values in a function like a
> Sin, but that varying their frequency with the time.
>
> Thanks in advanced,
>
> Ary
>
>
>