G Which is NOT true about the list of numbers returned by the polyfit command? 1. It represents an equation that passes through all of the input points 2. It represents the coefficients of the best fit polynomial 3. The coefficient of the highest order term is the first element of the list 4. You can use the it as an input to the polyval command. H. You recall from EF 151 that F=kx for a linear spring. If you want to determine a best-fit value for k based an on experimental set of x and F data, which command would you use? 1. p=polyfit(x,F,1); k-polyval(p.x(1)) 2. p=polyfit(x.F.1); k-p(1); 3. k-polyfit(x,F,1); 4. k=polyval(x,F,1) Which command could you use to find the best fit line if you have a data set? 1. polyint 2. polyeval 3. polyfit 4. polyget I. What would cause the polyfit command to issue a warning message? (Hint: Type 'help polyfit' on the command line and read the documentation) 1. repeated values in Y 2. repeated values in X 3. a value for N that is less than the number of elements in X 4. NO . IMAGES NOTES DISCUSS UNITS STATS HELP PREFERENCES Part Answer Save Status Description Which set of commands below will correctly determine the coefficients for an equation of the form x=a*cos(b*t+c) for a experimental set of data points when x is a function of t? A # tries: 0 Show Details 1109 4.23 pts. f=(b, t)(a.*cos(b.*t+c)); 1. b=nlinfit(t, x,f. (1 1 11); f=(b, t) (b(1).*cos((2).*t+b(3) }); 2. b=nlinfit(t, x,f. (1 1 1]): f=(b, t) (b(1).*cos((2).*t+b(3))); 3. b=nlinfit(x, t, f, [1 1 1]); f=0 (b, t) (a. cos (b.*t+c)); 4. bunlinfit(x, t, f, 11 1 11); 25% try penalty Which command could you use to fit data to non-polynomial functions? 1. nlinfit 2. nonpolyfit 3. nopolyfit 4. nonlinfit 5. polyfit B. # tries: 0 Show Details 4.23 pts 110% 20% try penalty Which command is used for interactive curve fitting