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## [Help-gsl] Fitting biexponential decay

**From**: |
Totte Karlsson |

**Subject**: |
[Help-gsl] Fitting biexponential decay |

**Date**: |
Tue, 22 Jan 2008 09:09:15 -0500 |

Hi,
I used gsl for fitting of a single exponential decay data. I found how to do
that in one of the examples and it works really great!
Now I need to find a fitter for a bi exponential decay function, i.e.
y(t) = A1exp{-lambda_1*t} + A2exp{-lambda_2*t}.
In the equation, the A1 and A2 will typically be equal ,(A1 == A2) and
initially set to 1, so thefit will be for lambda_1 and lambda_2.
Anyone who have some ideas how to start on this, or where to find some
example/working code? Any hints are appreciated.
Thanks!
-totte

**[Help-gsl] Fitting biexponential decay**,
*Totte Karlsson* **<=**