- #1

PaulDiddams

- 2

- 0

- TL;DR Summary
- A simple quadratic rearrangement that uses the intercept and the values of x and y that define the maxima or minima, in place of a, b and c, to drive a quadratic function. (demo Excel sheet attached).

Ever made a simple model that fits a quadratic function?

Tweaking the a, b and c constants to fit new observed data is a bit of a pain.

When I was a grad. student I came up with the following simple quadratic rearrangement that uses the

I would appreciate being credited

Enjoy.

Tweaking the a, b and c constants to fit new observed data is a bit of a pain.

When I was a grad. student I came up with the following simple quadratic rearrangement that uses the

*intercept*(**Yo**) and the values of*x*and*y*that define the*maxima*or*minima*(**Xm**,**Ym**) in place of non-intuitive*a*,*b*and*c*constants to drive the quadratic function. I also include rearrangements to calculate x from y, or Yo which I often find very useful too.I would appreciate being credited

**if you choose to use my rearrangement. I think it's really neat and very powerful.***"Diddams equation"*Enjoy.