Let 01 be the line segment from the point (4, 8) to the point (2, 4), 02 be the are on the parabola y = :52 8 from the point (4, 8) to the point (2, 4), and R be the region enclosed by C71 and 02. Consider the vector eld c, y) : (y | 2 cos(23: + y) , 2:5 I cos(2:1: + 31)). o r a. Evaluate / F-dR. 01 b. Use Green's Theorem to evaluate / I7\" - (11%, where C' is the counterclockwise boundary 0 of the region R. .o c. Use the results in 1a and 1b to deduce the value of f P: - (11%. C72