I get an answer for this problem, but its 0 and i think thats wrong. if someone could plz, help that'd be great. 1. The problem statement, all variables and given/known data Find the work using the Line Integral Method: W = Integral of ( Vector F * dr) Vector Field: F(x,y) = (xy^2)i + (3yx^2)j C: semi circular region bounded by x axis and y = squareroot(4-x^2) where y = squareroot(4-x^2) is greater than 0. 2. Relevant equations So where vector is <P,Q>, Work = Integral of (P dx + Q dy) over the region R. 3. The attempt at a solution So I first parameterized the curve to get P,Q,dx,dy in terms of a common variable: x = 2cost, y = 2sint for 0 <= t <= pi which implies dx = -2sint and dy = 2cost but when I carry out the integration, the limits of integration end up making my answer go to 0 because they are between 0 and pi and I always end up with a sin(t) in the result of the integral.