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The Unit Vector Resulted from Normalizing the Vector w=2,1,4\mathbf { w } = \langle 2 , - 1,4 \rangle

Question 11

Multiple Choice

The unit vector resulted from normalizing the vector w=2,1,4\mathbf { w } = \langle 2 , - 1,4 \rangle is


A) (219,119,419) \left( \frac { 2 } { \sqrt { 19 } } , \frac { - 1 } { \sqrt { 19 } } , \frac { 4 } { \sqrt { 19 } } \right)
B) (221,121,421) \left( \frac { 2 } { \sqrt { 21 } } , \frac { - 1 } { \sqrt { 21 } } , \frac { 4 } { \sqrt { 21 } } \right)
C) (25,15,45) \left( \frac { 2 } { 5 } , \frac { - 1 } { 5 } , \frac { 4 } { 5 } \right)
D) (223,123,423) \left( \frac { 2 } { \sqrt { 23 } } , \frac { - 1 } { \sqrt { 23 } } , \frac { 4 } { \sqrt { 23 } } \right)
E) (229,129,429) \left( \frac { 2 } { \sqrt { 29 } } , \frac { - 1 } { \sqrt { 29 } } , \frac { 4 } { \sqrt { 29 } } \right)

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