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anonymous

  • one year ago

Evaluate the expression: v ⋅ w Given the vectors: r = <8, 8, -6>; v = <3, -8, -3>; w = <-4, -2, -6>

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  1. anonymous
    • one year ago
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    @IrishBoy123

  2. IrishBoy123
    • one year ago
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    you did the dot yourself last time so this should be easy! first re-check the question, \(\vec r\) is irrelevant, is that right?

  3. IrishBoy123
    • one year ago
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    you just want \(\vec v \bullet \vec w\), yes?

  4. anonymous
    • one year ago
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    yeah

  5. anonymous
    • one year ago
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    but how do I do the dot with three numbers?

  6. IrishBoy123
    • one year ago
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    for the dot you just multiply the x component of each vector, the y component of each and the z component of each, and add the lot up make sense?

  7. anonymous
    • one year ago
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    oh hyeah okay just a min

  8. anonymous
    • one year ago
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    dot: (3)(-4)+(-8)(-2)+(-3)(-6)=22

  9. IrishBoy123
    • one year ago
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    http://www.urbandictionary.com/define.php?term=Booyah

  10. anonymous
    • one year ago
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    hahah so thats it?

  11. IrishBoy123
    • one year ago
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    yep

  12. anonymous
    • one year ago
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    sweet that was easy lol thanks!

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