Re: Engineering requests
- To: mathgroup at smc.vnet.net
- Subject: [mg125417] Re: Engineering requests
- From: Dana DeLouis <dana01 at me.com>
- Date: Tue, 13 Mar 2012 03:04:26 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
On Mar 12, 5:07 am, "McHale, Paul" <Paul.McH... at excelitas.com> wrote:
> The interval function looks a little to foreign to this intended purpose. Slight changes in the representation you chose seems to break it quickly.
<snip>
> > (* using table (correct answers) *)
> > R1=R1int;
> > R2=R2int;
> > Table[5/(Ra+Rb) Rb,{Ra,R1},{Rb,R2}]// Max
> > Table[5/(Ra+Rb) Rb,{Ra,R1},{Rb,R2}]// Min
>
> > Out[3]= 1.34146
> > Out[4]= 0.985401
vs:
5./(1+r1/r2)
Interval[{0.985401,1.34146}]
Hi. Not sure what was changed, but I believe one needs to eliminate duplicate variables.
I think you need to reduce the equation so that each interval occurs once.
Another way might be...
The numbers used are the min and max of the intervals involved.
5. * 27000 / (27000+110000)
0.985401
5.* 33000 / (90000+33000)
1.34146
= = = = = = = = = =
HTH :>)
Dana DeLouis
= = = = = = = = = =
- Follow-Ups:
- Re: Engineering requests
- From: "McHale, Paul" <Paul.McHale@excelitas.com>
- Re: Engineering requests