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Math Help - finding the midpoint of a line with Parametric form

  1. #1
    Newbie El Sparko's Avatar
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    finding the midpoint of a line with Parametric form

    The title kind of sums it up really

    I've been told to use the parametric form of a line to work out its midpoint and I'm completely lost

    the points I have are;

    A=(2,4) B=(5,9)

    the parametric form of the line is

    (2+3u)i + (4+5u)j


    thanks in advance for the help
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    Quote Originally Posted by El Sparko View Post
    I've been told to use the parametric form of a line to work out its midpoint and I'm completely lost the points I have are; A=(2,4) B=(5,9)
    The line determined by points A~\&~B is \ell(t)=(2,4)+t(3,5).
    So to find the midpoint between A~\&~B let t=\frac{1}{2}.
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