Letfbe the function defined as follows.

y=f(x) =3x²3x+7

(b)Use your result from part (a) to find the approximate change inyifxchanges from 2 to 1.97. (Round your answer to two decimal places.)

dy=

(c)Find the actual change inyifxchanges from 2 to 1.97 and compare your result with that obtained in part (b). (Round your answer to two decimal places.)

y=