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Solve the Problem v=13i+13j13k\mathbf { v } = \frac { 1 } { 3 } \mathbf { i } + \frac { 1 } { 3 } \mathbf { j } - \frac { 1 } { 3 } \mathbf { k }

Question 98

Multiple Choice

Solve the problem.
-Find a vector of magnitude 9 in the direction opposite to the direction of v=13i+13j13k\mathbf { v } = \frac { 1 } { 3 } \mathbf { i } + \frac { 1 } { 3 } \mathbf { j } - \frac { 1 } { 3 } \mathbf { k } .


A) 93(13i13j+13k) 9 \sqrt { 3 } \left( - \frac { 1 } { 3 } i - \frac { 1 } { 3 } j + \frac { 1 } { 3 } k \right)
B) 93(13i+13j13k) 9 \sqrt { 3 } \left( \frac { 1 } { 3 } \mathbf { i } + \frac { 1 } { 3 } \mathbf { j } - \frac { 1 } { 3 } \mathbf { k } \right)
C) 9(13i+13j13k) 9 \left( \frac { 1 } { 3 } \mathbf { i } + \frac { 1 } { 3 } \mathrm { j } - \frac { 1 } { 3 } \mathbf { k } \right)
D) 9(13i13j+13k) 9 \left( - \frac { 1 } { 3 } \mathbf { i } - \frac { 1 } { 3 } \mathbf { j } + \frac { 1 } { 3 } \mathbf { k } \right)

Correct Answer:

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