For a given data set of xy pairs a polynomial regression of this kind can be generated. Find the best-fit quadratic polynomial to the CO2 data. Solved Write A Matlab User Defined Function That Determines Chegg Com Why you sure of this. . Im not sure if I understood your question correctly but this may be what you want. Y1 polyval px1. In linear regression the model specification is that the dependent variable y is a linear combination of the parameters but need not be linear in the independent. Generate 10 points equally spaced along a sine curve in the interval 04pi. For n 2 there will be a solution but in the overdetermined case there almost always fails to be one. The expected value of y would be. In which represent coefficients created by a mathematical procedure described in detail here. Y f x a x 2 b x c. Y 0218 43 2239 42 6084 4 300915 2547. Set up the matrix X Create the vector z C...