How can Linear Discriminant Analysis and Artificial Neural Networks be used in predicting chronic kidney disease?

Acase study allows a more detailed look at the life of a single subject than any other study.

Least square fit to polynomial write a function leastsquarefit3pol that solves a linear system of equations to find a least squares fit of a third order polynomial to an experimental data set given as two row arrays. the function leastsquarefit3pol must explicitly solve a set of linear equations and cannot use polyfit. there should be no restriction on the size of the problem that can be solved.

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