Question

PolynomialFit Video Tutorial for this problem -- 7 min Please read through example 11.10.3 Polynomial Fit and study its solution. Now solve for the 3rd order polynomial coefficients (a0 through a3), when given row vectors x and y of length 4 for the x and y values of the four points that the polynomial must include. Finish the polynomialFit function below. Function Save C Reset DI MATLAB Documentation 4 1 function a = polynomialFit(x,y) % fit the 4 points in (x,y) % with a 3rd order polynomial % X: vector of 4 x values % y: vector of 4 y values 6 % a: vector of coefficients all - a3 7 8 $ define the A matrix using x(1) for first row, x(2) for second row, etc... 9 A = 0; % fix me 10 11 % define the b vector using y(1) through y(4) 12 b = 0; % fix me 13 14 % solve for the a), al, a2, a3 coefficients 15 a = 0; % fix me 16 17 end Code to call your function C Reset 1 x = (1, 0, 3, 4); 2 y = (-4, 4, 4, 16]; 3 polynomialFit(x,y)

Answer 1

function a А «О) polynomicet fit (x,y) 6-0 i a = 0; % fits the 4 points in (x,y) P- polyft (xy, 3); 61 - go bo polyval (6,61); 1. Calculate the value forylingly Coefficient value of poly fit La a =p el