The electric potential in a region of the \(xy\)-plane is described by the function \(V(x, y) = 3x^2y - y^3\), where \(V\) is in volts and \(x\) and \(y\) are in meters. What is the magnitude of the electric field at the point \((x, y) = (1.0\text{ m}, 2.0\text{ m})\)?