[R] R help

[Ahmed Attia]

Dear All,

I'm a beginner user in R and I would like to make a quadratic and
plateau model in R. Can you help please with an example?

Thanks so much



-- 
Ahmed M. Attia
Assistant Lecturer
El-Khattara farm Station
Agronomy Dept.,
Zgazig Univ., Egypt
Visiting Scientist
Haskell Agricultural laboratory
Agronomy and Horticultural Dept.,
Univ. of Nebraska-Lincoln
ahmedatia at zu.edu.eg
aattiamohamed2 at unlnotes.unl.edu
Cell phone: 4023604178