Programming Homework Help

what we have to learn (Learn how to use MATLAB for “function discovery”, the process of finding a mathematical equation that describes a set of empirical data. Use polyfit to find coefficients for polynomial fits and polyval to evaluate those fits.The usage of those functions is as follows:p = polyfit(x,y,n) fits a polynomial of degree n to data described by the vectors x and y, where x is the independent variable. Returns a row vector p of length n+1 that contains the polynomial coefficients in order of descending powers.y = polyval(p,x)evaluates a polynomial at specified values of its independent variable x. The polynomial’s coefficients of descending powers are stored in the array p. The result y is the same size as x.Fit higher order polynomials to data using polyfit and extrapolate to estimate y at different values of x.Calculate residuals or the coefficient of determination (R2), which are measures of the “goodness of fit” of the line.Understand the difference between “best fit” lines (regression), which do not go through every point, and interpolation, in which piece-wise curves (with different equations) are fit between every data point.Be able to fit data with both linear and cubic spines, using interp1 and spline.) I upload the question