Suppose you have the following data points for a polynomial of degree 2 -1 1 3 y 3 7 -2 -4 Find the best fit polynomial, P2(x) for the above data points by the least squares method by answering the following (a) Write down the matrices: A, b and AT; and then compute the normal matrix AT A and ATb. (b) Now let V = A" A. Apply LU-decomposition method on the matrix V to find the value of columi T

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A: Use least square method to solve it

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