(1 point) Compute V f and find the tangent line of the level curve f (x, y) = c at the given point. f(x, y) = x2 xy + 5y2 and the point is (5, 3). The gradient is (Answer in format.) The tangent line in parametric form is: x = x(t) = y=y(t) = The tangent line in slope-intercept form is: y =