Find the eqn of the plane in the form r.n=p, which contains the line, l, and the point with position vector, a, where l: r=-2i +3j-k +t(2i-j-3k) a=-3i+j+2k Any help on working out n?
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Last edited by Plato; Mar 29th 2009 at 11:18 AM.
I'm not sure i understand; the answer in the back of my book tells me it's r.(9i+3j+5k)=-14
Originally Posted by Erghhh Find the eqn of the plane in the form r.n=p, which contains the line, l, and the point with position vector, a, where l: r=-2i +3j-k +t(2i-j-3k) a=-3i+j+2k Any help on working out n? Ok what should be the plane's direction? What should be its distance from origin? think in terms of line and that point EDIT: Distance = perpendicular distance of plane
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