The directional derivative of q(x, y) = along a line making an angle 30" with the positive x-axis at (0,2) is equal to_ (your answer should be upto two decimalp

The directional derivative of Q(x, y) = along a line making an angle 30" with the positive x-axis at (0,2) is equal to_ (Your answer should be upto TWO DECIMALPLACES)