1. Calculate the integral F(r)=4yi, along the path C:x^2+4y=4 from (2,0) to (0,1)

2. Calculate the integral F(r)=3yi+xj, along a straight line segment from (0,0) to (2,1)

3. Calculate the integral F(r)=yi+3xj, along the path: C:y^2+x=2 from (-2,2) to (2,0)