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Give to an interpolation function an analitic function with mathematica

  1. Jun 6, 2008 #1
    i have solved a differential equation with shooting methods, the output is in form of interpolate function, i can see it with a graphics, but i i would have an approssimate analitic form what kind of function i have to do ?

    the equation give in output have this form..


    where theta1 is the indipendet variable....
    i would like to have a forme like :

    g[theta1] = a *theta1^2+ b*theta1+ c...

    how can i have this solution ?
  2. jcsd
  3. Jun 6, 2008 #2
    Use "FindFit"
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