Find the position vectors that join the origin to the points with coordinates A(2, -1) and B(-3, 2). Express your answers as column vectors. Hence find line AB.
Find the position vectors that join the origin to the points with coordinates A(2, -1) and B(-3, 2). Express your answers as column vectors. Hence find line AB.
Vector points at the point A and points at the point B:
The direction of the line AB is determined by
The line AB passes either through A or B. Therefore the equation of the line is:
Find the position vectors that join the origin to the points with coordinates A(2, -1) and B(-3, 2). Express your answers as column vectors. Hence find line AB.
All help is welcome
Thanks in advance!
and .
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Earboth is obviously a quicker hand at latex than me. Note that his/her vector and mine are both in the direction of the line .... just in opposite directions. It doesn't matter which one you use.
Last edited by mr fantastic; February 9th 2008 at 12:25 PM.
Reason: Added the last paragraph