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March 28, 2017

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Suppose that in a certain basis B = (x,y,z), vector u is: u = 2x+3y-z. Find a unit vector with the same direction as u.

Thank you

  • Linear Algebra - ,

    |u| = sqrt (2+9+1) = sqrt(12) = 2 sqrt(3)

    unit vector = ( 1/{2 sqt3} ) u

    = (1/6) sqrt 3 (2i+3j-k)

  • Linear Algebra - ,

    how did you get (2+9+1)?

    Thank you

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