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Question: NonlinearFit issue

Question:NonlinearFit issue

alba 0 Maple 15
statistics nonlinear curvefitting
September 12 2011
0

Hi,

A while back, I was trying to use Maple's NonlinearFit function, but I kept getting an error regarding the input.  Any help you might be able to give me would be appreciated.  Thanks much.

Y := [96, 183, 290, 472, 711, 1191, 1746, 2573, 3507, 4410, 5133, 5597, 5948, 6294, 6408, 6511, 6559, 6596, 6618]

X := [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]

Statistics[NonlinearFit](1/(1/6650+(1/n-1/6650)*e^(-rx)) > 0, X, Y, x, initialvalues = [n = 50, r = .5])

 

 Error, (in Statistics:-NonlinearFit) invalid input: no implementation of NonlinearFit matches the arguments in call, NonlinearFit(0 < 1/(1/6650+(1/n-1/6650)*e^(-rx)), op(w), x, initialvalues = [n = 50, r = .5])

 
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