Physics, 06.05.2020 05:20 markmoroney22
In this problem, we want to represent the relationship between the input of a system, x, and its output, y, using a polynomial. A set of 21 system measurement data pairs were obtained and saved in the MATLAB file xyg1.mat.
To solve this problem, design and write a MATLAB function named polyfitsystem. m that has the following requirements:
1. The function must have the following input arguments:
a. x containing the input measurement data
b. y containing the output measurement data
c. R2 the minimum desired coefficient of determination resulting from the curve fitting calculations
2. The function must have the following output arguments:
a. z containing the coefficients of the fitting polynomial
b. N the degree of the polynomial
c. R2 the actual coefficient of determination resulting from the curve fitting calculations.
You may use the MATLAB built-in functions polyfit and polyval inside your user-defined function polyfitsystem.
To test your function, write a MATLAB script that calls your polyfitsystem function using the provided data and the following examples of minimum desired values for R2
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