What is the magnitude of the vector

  • Thread starter -EquinoX-
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  • #1
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Homework Statement



what is the magnitude of the vector:

v = 3i - 4j - k

Homework Equations





The Attempt at a Solution



what I have is:

sqrt(3^2 + (-4)^2 + (-1)^2)

is this correct?
 

Answers and Replies

  • #2
35,008
6,758


It's correct, but should be simplified. Carry out the operations in the outer parentheses so that your answer is the square root of a single number.
 
  • #3
564
1


hmm..the question asks for an exact answer... so should it just be sqrt(26)
 
  • #4
35,008
6,758


That ***is*** the exact answer.
 

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