Evaluate the line integral (x-3y²) ds where C is the straight line segment from (0, 1, 1) to (3,-2,2), and assign the result to q3. . A piece of wire is in the shape of the circle x² + y² = 1. The density at any point is given by f(x, y) = x² + 14. Find the mass of the wire using a line integral and assign the result to q4. Evaluate the line integral z dx + xyz dy + xy dz where C is the top half of y²+2² = 4 in the plane x = 2 traveling from left to right (negative y to positive y ). Assign the resul to a5.