Archived posting to the Leica Users Group, 2009/01/30

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Subject: [Leica] Need help with formulae
From: afirkin at afirkin.com (Alastair Firkin)
Date: Fri Jan 30 21:21:39 2009

Looked at that, but the actual formula you use is not clear to a bunny like 
me ;-(

--- jayanand@gmail.com wrote:

From: Jayanand Govindaraj <jayanand@gmail.com>
To: Leica Users Group <lug@leica-users.org>
Subject: Re: [Leica] Need help with formulae
Date: Sat, 31 Jan 2009 10:46:05 +0530

http://en.wikipedia.org/wiki/Geometric_progression

Cheers
Jayanand

On Sat, Jan 31, 2009 at 10:38 AM, Alastair Firkin <afirkin@afirkin.com>wrote:

> G'day all,
>
> does anyone know a formula which allows you to calculate a value in a
> geometric progression. For example if a number doubles 2.8 times in 10
> years, what will that number be. At the moment the only way I can do it is
> "long hand" ie if 10 is going to double 2.8 times then it would be 10
> doubled to 20, twenty doubled to 40 then add 80% of the next double ie 32
> plus the 40 equals 72, BUT is there a formula, so I can put in other times
> of doubling.
>
> Troubled
>
> Alastair
>
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Replies: Reply from jayanand at gmail.com (Jayanand Govindaraj) ([Leica] Need help with formulae)