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If I already had a function and some points(x,y), how can I find six parameters in a function?

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mingxing Liao
mingxing Liao 10 Jan 2021
댓글: Alex Sha 11 Jan 2021
I already known a function: a+b.*exp(c.*t)+d.*t.*exp((e.*t).^f
unknown parameters are 6 : a b c d e f.
some points:
Please help me. Thanks!

답변(1개)

Matt J
Matt J 10 Jan 2021
fminspleas would be a good choice,
seeing as 3 of your parameters (a,b, and d) are intrinsically linear,
funlist={1, @(cef,t) exp(cef(1).*t) , @(cef,t) t.*exp((cef(2).*t).^cef(3)) };
[cef,abd]=fminspleas(funlist,[c0,e0,f0], t,y);
[a,b,c,d,e,f] = deal(abd(1), abd(2), cef(1), abd(3), cef(2),cef(3));

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