Part b is 2y^2-12x^3y^3........ same as par a

15. Consider the vector field F (z,y) = (2y]- 1213y], Ary - 9ry? ) is conservative (a) Show that F (z, y) is conservative (b) Find a potential function ( F - V/) for F (x, y) and use it to evaluate (13 - 12ry') de+ (Ary -9ry?) dy, where C is any path from (1, 1) to (3, 2)