On Sat, 24 Apr 2004 08:02:25 +0200, "Konrad Den Ende"
<[EMAIL PROTECTED]> wrote:
> Suppose you know that a process follows a function
> y(t) = a + b e^-x, t >= 0.
y(t) = a + b e^-t, t >= 0.
> ALso, suppose you have following data.
> t: { 0, 1, 2, 3 }
> y: { 2.2, 1.4, 0.87, 0.44 }
>
> How does one estimate the values of a and b?
Isn't this a simple least square problem which reduces to a linear
regression y = a + b*x for
x: { 1 , e^-1, e^-2 ,e^-3 }
y: { 2.2, 1.4, 0.87 ,0.44 }
--
Horst
> I have estimated a+b to be 2.2 but i'm not to happy with that. Also, i have
> very little to say about how to estimate a or b alone. Anybody having a
> helping hand here?
.
.
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