My Math Forum  

Go Back   My Math Forum > High School Math Forum > Algebra

Algebra Pre-Algebra and Basic Algebra Math Forum

LinkBack Thread Tools Display Modes
August 29th, 2008, 09:04 AM   #1
Joined: Aug 2008

Posts: 1
Thanks: 0

Fitting sigmoid curve with three points


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)

John20 is offline  

  My Math Forum > High School Math Forum > Algebra

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

Copyright © 2019 My Math Forum. All rights reserved.