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Fitting solution function of NDSolve with a curve
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[QUOTE="member 428835, post: 6569959"] The following solves an IVP, giving the output as the function f3[x]: [CODE] s3 = NDSolve[{(-z1[t]^(3/2) + (1 + z1[t]^2)^(3/4))/( 3 (-z1[t] + Sqrt[1 + z1[t]^2])) == z1[t] z1'[t], z1[0] == 0.0001}, z1, {t, 0, 30} f3[x_] := z1[x] /. First[s3]; [/CODE] My question is, how do I curve fit f3[x] to the function ##at^b## over domain ##t\in[0,1]##? Looks like ##t^{0.6}## does a good job (by eye) but is there a better way? [/QUOTE]
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Fitting solution function of NDSolve with a curve
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