GATE Civil Engineering (CE) 2021 Shift 2 Solved Paper

A function is defined in Cartesian coordinate system as f(x, y) = xe^y. The value of the directional derivative of the function (in integer) at the point (2, 0) along the direction of the straight line segment from point (2, 0) to point $\left(\frac{1}{2},2\right)$ is ______