Calculating 2nd Order Polynomial Curve Fit from 3 Points

[diarmaede]

Hi All,

I am wondering if there is a simple way to calculate the coefficients a, b and c in a 2nd order polynomial equation of the form

y = ax^2+bx+c

given 3 known points.

Is there a LabVIEW function that can do that automatically?

Thanks!

- FB

[nathand · Accepted solution]

I believe you're looking for General Polynomial Fit.

[diarmaede]

Yup.  My brain is definitely sputtering today.  I was having a hard time figuring out how to format my data for that function, but I looked at it again when you posted the link, and it should be pretty easy.

Thanks!