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Author: Anonymous Language: text
Description: No description Timestamp: 2007-10-17 17:26:12 -0400
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  1.    Show that the foot of the perpendicular from the point p
  2.    to the line r = a + λu has position vector [Hint: first sketch a diagram to
  3.    represent the problem]:
  4.                                      
  5.                                 a+ ( u .(p − a) / |u|^2 )u
  6.  
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