
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
February 23rd, 2013, 04:05 PM  #1 
Member Joined: Nov 2009 Posts: 37 Thanks: 0  Modelling real life data http://www.livoniapublicschools.org/web ... 22013.pdf (please scroll down to page 7, for the problem "GOLD MEDAL HEIGHTS") In brief, I am asked to find a model function for the real life data. I am currently experimenting with quintic functions (degree 5) as there are 4 local max/mins, but there's an obvious limitation as the y values reaches positive and negative infinity as x > +infinity and x > infinity. This is impossible in real life as human jump heights will reach a biological maximum limit (and impossible to jump a negative height). I was also thinking of a step wise function, where after a quintic function, I add onto a logarithm function as to introduce a horizontal asymptote. As well, I was thinking of a sigmoid function, as this is a biological data. Maybe even arc tan function... (but I have no idea what that is) My teacher has been absent for the last couple of weeks due to health issues, and the substitute doesn't know any math. As such, I have been working on this by myself for a week now, and I am stuck. Any help will be appreciated 
February 25th, 2013, 11:56 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 19,981 Thanks: 1853 
For 1952 onwards, and just for fun, height = 250  928/(year  1932).


Tags 
data, life, modelling, real 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Real life maths  nebz  Math Books  0  April 19th, 2013 06:01 PM 
Modelling Data Help!  jimmy_neutron987  Algebra  5  February 18th, 2013 11:52 AM 
A real life example of a function  maclen89  Algebra  1  April 10th, 2012 12:01 AM 
Real life geometry problem  nickorette  Geometry  2  July 2nd, 2010 08:56 PM 
Math applied in real life  zoliky  Applied Math  0  January 4th, 2009 12:07 PM 