SOLUTION: Please help me. I want to know if my answer is correct.
Which of the following is/are correct?
My answer is none are correct because the answers are not 1 over the square roots
Algebra.Com
Question 582461: Please help me. I want to know if my answer is correct.
Which of the following is/are correct?
My answer is none are correct because the answers are not 1 over the square roots
A) if u = (u1, u2) with ui not equal to 0 for all 1 < or equal to i < or equal to 2... then the unit vector in the direction of u is (u1, u2)
B) if u = (1, 2, 3) then the unit vector in the same direction of u is (1, 2, 3)
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
A unit vector is represented by the vector divided by the norm of the vector, in other words, it is the vector with the magnitude (or length if you prefer) normalized to 1.
Hence, if })
, then 
, and 
which is the same thing as 
and which in turn is exactly the same as 
. I can't find any fault with the given answers.
John
My calculator said it, I believe it, that settles it
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