Textile Engineering > GATE 2015 > Calculus
The normal vector to the surface z = √(x² + y²) at (1,1,1) is
A
î +ĵ + k̂
B
î - ĵ + k̂
C
-î - ĵ + k̂
D
-î + ĵ + k̂

Correct : c

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