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Math Help - Straight

  1. #1
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    Straight

    Finding the equations of the straight (m) through the point M (3,2,1) and is coplanar with the straight (l) and orthogonal to the straight (s), and (l): x-2=\frac{y-1}{-1}=\frac{z-1}{2} and (s): (x, y, z) = (-1.2,-3) + t(3,5,6)

    Answer:
    \frac{x-3}{3}=y-3=\frac{z+2}{-2}
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  2. #2
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    That can't be right. It doesn't contain M.
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  3. #3
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    Sorry. The professor drew up the issue this way, which way to calculate?


    Excuse the language is that I'm Brazilian
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  4. #4
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    Perhaps you should start by finding the Plane containing m, M, and l. How do you propose to do that?

    Language Note: I think it should be "line", not "straight". Good try, though.
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  5. #5
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    Sorry the correct answer is:
    x-2 = y-1/-1 = z-1 / 2.


    Because I do coplanar the product mix of (w, l, MPl)-2x +2 = y +2 z = 0


    And being orthogonal to (s) 3x +5 and +6 z = 0


    I can assign a value to X and discover the other unknown?
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  6. #6
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    Quote Originally Posted by Apprentice123 View Post
    the product mix of (w, l, MPl)
    Sorry, I cannot tell what this means. Is it a Cross Product, maybe?
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  7. #7
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    ok. I managed to solve
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