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  1. #1
    Senior Member Rex's Avatar
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    Default Do you know vectors and calculating them buggers?

    (3s-5) * (8,s-2)=0

    Here is some music while you ponder.

    Epic derailment:
    wierd memory work->Tamagochi->tetris->Starcraft2->thugs->Chess->german techno->Love parade->disaster->death..
    http://www.youtube.com/watch?v=Q1wH2...eature=related

  2. #2
    Analytical Dreamer Coriolis's Avatar
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    Quote Originally Posted by MatsNorway View Post
    (3s-5) * (8,s-2)=0
    If you are taking the scalar ("dot") product, this is:

    (x1, y1) ⋅ (x2, y2) = (x1*x2)+(y1*y2)

    But I am not sure what your ordered pairs are here. Do you mean

    (3,s-5) * (8,s-2)=0?
    I've been called a criminal, a terrorist, and a threat to the known universe. But everything you were told is a lie. The truth is, they've taken our freedom, our home, and our future. The time has come for all humanity to take a stand...

  3. #3
    Senior Member Rex's Avatar
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    Quote from the book.

    find s with calculations so that (3s,-5) stands directly (90deg i guess) on to(8,s-2)

    sorry if the first was incorrect set up.
    Epic derailment:
    wierd memory work->Tamagochi->tetris->Starcraft2->thugs->Chess->german techno->Love parade->disaster->death..
    http://www.youtube.com/watch?v=Q1wH2...eature=related

  4. #4

    Default

    Quote Originally Posted by Coriolis View Post
    If you are taking the scalar ("dot") product, this is:

    (x1, y1) ⋅ (x2, y2) = (x1*x2)+(y1*y2)

    But I am not sure what your ordered pairs are here. Do you mean

    (3,s-5) * (8,s-2)=0?
    Quote Originally Posted by MatsNorway View Post
    Quote from the book.

    find s with calculations so that (3s,-5) stands directly (90deg i guess) on to(8,s-2)

    sorry if the first was incorrect set up.
    Yeah, the dot product should get you the answer you're looking for. Have you tried it yet?

  5. #5
    Senior Member Rex's Avatar
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    S= -10/19
    Epic derailment:
    wierd memory work->Tamagochi->tetris->Starcraft2->thugs->Chess->german techno->Love parade->disaster->death..
    http://www.youtube.com/watch?v=Q1wH2...eature=related

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