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12. [-/0.57 Points] DETAILS SCALCET9 16.3.018. MY NOTES ASK Consider F and C below. F(x, y) = (7 + 2xy2)i+ 2x2yi, C is the arc of the hyperbola y = - from (1, 1) to 3, X (a) Find a function f such that F = Vf. f ( x, y ) = (b) Use part (a) to evaluate F . dr along the given curve C. Need Help? Read It31. [0/0.57 Points] DETAILS PREVIOUS ANSWERS SCALCET9 16.8.008. MY NOTES ASK Use Stokes' theorem to evaluate F . dr where C is oriented counterclockwise as viewed from above. F(x, y, z) = i+ (x + yz)j + (xy - vz)k, C is the boundary of the part of the plane 5x + 4y + z = 1 in the first octant 11 60 X Need Help? Read It