Electrical Engineering > GATE 2018 > Vector Calculus
The value of the directional derivative of the function Φ(x, y, z) = x y2 + y z2 + z x2 at the point (2, -1, 1) in the direction of the vector p = i + 2j + 2k is
A
1
B
0.95
C
0.93
D
0.9

Correct : a

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