Electrical Engineering > GATE 2024 > Vector Calculus
Consider a vector u̅=2x̂+ŷ+2ẑ, where x̂, ŷ, and ẑ represent unit vectors along the coordinate axes x, y, and z, respectively. The directional derivative of the function f(x,y,z)=2 ln(xy)+ln(yz)+3 ln(xz) at the point (x,y,z)=(1,1,1) in the direction of u̅ is _______.
Correct : c) 7
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