EC > GATE 2014 SET-4 > Calculus
The directional derivative of f(x, y) = x2 + xy at (1, 1) in the direction of the unit vector at an angle of π/4 with y-axis, is given by ______.

Correct : 3

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directional derivative GATE EC GATE 2014 EC f(x y) = x<sup>2</sup> + xy unit vector π/4 f(x y) derivative EC gate questions directional derivative y-axis GATE EC 2014

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