Question 7 Evaluate the integral I = Sc F(x, y) . dr of the vector field F on R given by Tries remaining: 3 F(x, y) = (5 . x4 . sin(y) - sin(x) . y' , x5 . cos(y) + 3 . cos(x) . y?) Marked out of 10.00 where C is the oriented line segment joining A( 7, 0) to B(0, [). Flag question Check Question 8 Evaluate the line integral (xy)ds, along the upper half of the circle C whose center is on the x-axis and whose x- Tries intercepts are at A(-9, 0) and B(1, 0). remaining: 2 = Marked out of 10.00 Check Flag question Question 9 Which of the following statements are true? Tries (i) The line integral I = S F(x, y) . dr of the vector field F = (3x2, 3y?), where C is the curve given by remaining: 2 r(1) = (t(1 - 1), sin(xt)), 0