Often, the following inquiries are made from customers.
In the case of the above polynomial regression, the estimation equation is given in the form of a red square. In other words,
Y=β0+β1X1+β2(X1-C)^2
I am wondering how you can change these expressions like this, or what options you can change.
Y=β0+β1'X1+β2X1^2+C'
here
β1'=(β1-2Cβ2)X1, C'=β0+β2C^2
Thank you in advance.
