comment extrapoler une courbe

[pmat]

Avec des valeurs données comment extrapoler une courbe dans le sens décroissant.

[Fred_Kohlhepp]

There is an assortment of curve fitting tools.  Attached is a simple example.

[RichardJ]

Do you know what the value of Fi should be at T=0?

Do you know the theoretical function that should describe the data?

[Werner_E]

Where does the data stem from and why do you need that extrapolation?

The Fi data is equally spaced, so it may make more sense to plot T over Fi.

Any reason you have used a logarithmic scale on Fi?

WE

[pmat]

merci; ça m'a beaucoup aidé.