Date:         Sun, 11 Jul 2010 13:32:29 -0700
Reply-To:     Arthur Tabachneck <art297@NETSCAPE.NET>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Arthur Tabachneck <art297@NETSCAPE.NET>
Subject:      Re: Need to find a value that can make the equation's value = 0
              like Solver in Excel
Content-Type: text/plain; charset=ISO-8859-1

If you only need to solve for one value, couldn't you just a binary-
tree-type-search using a do while loop?

Art
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On Jul 11, 1:34 pm, CC <chchanghe...@gmail.com> wrote:
> On Jul 10, 8:04 pm, Patrick <patrick.mat...@gmx.ch> wrote:
>
> > "...need to find Ri for each firm/year."
> > If it's firm/year why then isn't it Ri,t?
> > It would be helpful for someone like me if you also could explain what
> > the different literals mean (M, B, ROE,...). I assume ROE is Return on
> > Investment, but what's the rest?
> > Was this formula given to you or did you develop it based on a
> > problem? My unqualified impression is that this is more a question of
> > getting the maths right first.
>
> Hi Patrick,
>
> The formula is a simplified version but I am sure this will not affect
> the result as my main problem is to find a function to deal with it (I
> am pretty sure even it is a simplified version, we can still get an
> answer if we know which function we can use.).  And, of course, I will
> use the complete version of formula to solve this question later.  The
> M and B are the market value and book value, respectively.  I did not
> want to mention it since I will not like to confuse people and want to
> simply focus on the question itself.  And, yes, it should be Ri,t
> instead of Ri.  So, your observation is correct.  Thanks for that.
> But, if we can find one Ri then the rest is easy
> relatively.   Could you give me some suggestions on how to solve it?
> Thanks.