a. f(x) = 2 cos 2x -x b. f(x)=x² Inx+1 5. Use the most accurate three-point formula to determine each missing entry in the following tables. a. x f(x) f'(x) b.

x f(x) f'(x) 1.1 9.025013 1.2 11.02318 1.3 13.46374 1.4 16.44465 8.1 8.3 8.5 8.7 16.94410 17.56492 18.19056 18.82091