Try to use some simplifying method first like binomial expansion of
     square root.
     Another way could be that find an approximating formula ... like
     newton's one or regressions etc ... i normally use Microsoft's Excel
     to draw the graph and then i find the best approaching trend line and
     the equation for that trend line.

     btw: What are the possible values could be in N and A


______________________________ Reply Separator _________________________________
Subject: Algorithm Help
Author:  pic microcontroller discussion list <PICLIST@MITVMA.MIT.EDU> at smtpgwy
Date:    11/6/97 12:04 AM


I'm currently working on a project using a PIC16C64.  I need to solve the
following equation:

T = sqrt(2/A) * ( sqrt(N) - sqrt(N-1) )

I've seen a number of spiffy square root routines, mostly derived from
newton's method, but some other, more innovative ones as well.

Any suggestions as to the most effecient way to do this.

- Keith