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Find a Normal Vector to the Surface xyz=8x y z = 8

Question 205

Multiple Choice

Find a normal vector to the surface xyz=8x y z = 8 at the point (1,2,4) ( 1,2,4 ) .


A) 2i+4j+k2 \mathbf { i } + 4 \mathbf { j } + \mathbf { k }

B) i+4j+2k\mathbf { i } + 4 \mathbf { j } + 2 \mathbf { k }
C) 4i+2j+k4 \mathbf { i } + 2 \mathbf { j } + \mathbf { k }
D) i+2j+4k\mathbf { i } + 2 \mathbf { j } + 4 \mathbf { k }
E) 4i+j+2k4 \mathbf { i } + \mathbf { j } + 2 \mathbf { k }
F) 2k+j+4i2 \mathbf { k } + \mathbf { j } + 4 \mathbf { i }

G) i+j+k\mathbf { i } + \mathbf { j } + \mathbf { k }

H) i+2j+2k\mathbf { i } + 2 \mathbf { j } + 2 \mathbf { k }

Correct Answer:

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