You only have to do one problem, I only posted both of these because I don't know which is conservative, and I would like to know how to compute the potential function. Thanks!!

1. Determine whether or not the vector field F(x, y) = 3xzi + y j is conservative. If it is, compute the potential function. 2. Determine whether or not the vector field F(x, y) = zzyzit Er yj is conservative. If it is, compute the potential function