Consider the vector field F = (4x + 7y, 7x + 3y). O The vector field is not conservative The vector field is conservative, and the potential function such that f(0, 0) = 0 for F is f(I, y) = 2x42+7yx Preview 2x2 + 7yx syntax ok . If F is conservative, use f(@, y) to evaluate F . dr along a simple closed smooth oriented curve (C). C F . dr = Preview