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Find a Unit Vector in the Direction Opposite of U u=9i+4jk\mathbf { u } = 9 \mathbf { i } + 4 \mathbf { j } - \mathbf { k }

Question 197

Multiple Choice

Find a unit vector in the direction opposite of u. u=9i+4jk\mathbf { u } = 9 \mathbf { i } + 4 \mathbf { j } - \mathbf { k }


A) 989898(9i+4jk) \frac { 98 \sqrt { 98 } } { 98 } ( 9 \mathbf { i } + 4 \mathbf { j } - \mathbf { k } )
B) 989(9i+4jk) - \frac { \sqrt { 98 } } { 9 } ( 9 \mathbf { i } + 4 \mathbf { j } - \mathbf { k } )
C) 9898(9i+4jk) - \frac { \sqrt { 98 } } { 98 } ( 9 \mathbf { i } + 4 \mathbf { j } - \mathbf { k } )
D) 9898(9i+4jk) \frac { \sqrt { 98 } } { 98 } ( 9 \mathbf { i } + 4 \mathbf { j } - \mathbf { k } )
E) 989898(9i+4jk) - \frac { 98 \sqrt { 98 } } { 98 } ( 9 \mathbf { i } + 4 \mathbf { j } - \mathbf { k } )

Correct Answer:

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