
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
August 29th, 2008, 09:04 AM  #1 
Newbie Joined: Aug 2008 Posts: 1 Thanks: 0  Fitting sigmoid curve with three points
Hi, There are three points on a plane (x1,y1), (x2,y2) and (x3,y3). How to find m,n,k that (x1,y1), (x2,y2) and (x3,y3) satisfy y1 = m*x1^n/(k^n+ x1^n) y2 = m*x2^n/(k^n+ x2^n) y3 = m*x3^n/(k^n+ x3^n) Thanks 

Tags 
curve, fitting, points, sigmoid 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
curve fitting  bottlerocket  Applied Math  1  December 21st, 2012 05:45 AM 
Function for fitting a curve to 3 points?  doctornash  Applied Math  2  June 9th, 2011 06:24 AM 
Different weight of points in curve fitting  Double  Advanced Statistics  0  December 12th, 2010 02:02 AM 
normalized sigmoid curve  baxy7  Algebra  6  July 20th, 2010 06:48 PM 
curve Fitting  rainy cloud  Applied Math  3  December 2nd, 2008 05:42 PM 