B2 Book on Quadratic Reg Models and Exercises. First read pages 201-205 after clicking the link. Please do 4.36, 4.37b, in addition to 4.40, and 4.41 we discussed in class.

https://drive.google.com/file/d/1S6uiOkYiEpt4EH5edI_MCSpG9APqUZwM/view?usp=sharing