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January 31st, 2011, 04:33 PM  #1 
Newbie Joined: Jan 2011 Posts: 1 Thanks: 0  Finding the function of this graph
Hello, I have a simple question. Could anyone tell me how to get a function from a graph. It should be a mathematical way. I am trying to say it should be calculated. It would be cool if you could use this graph as an example. Thx 
January 31st, 2011, 06:13 PM  #2 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,209 Thanks: 517 Math Focus: Calculus/ODEs  Re: Finding the function of this graph
It's challenging to get exact results from a graph, but to me it appears to be a sine function (0,0) with period of about 6.25 whose amplitude is roughly doubling every half period, where f(2) ? 2 thus using these crude guesses we have: After some minor simplification: 

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