Vectors (Planes) question from 1989

• limywv

  18 Mar 09, 19:39

  
  

   

   

   

• wee_ws

  18 Mar 09, 20:10

  Hi,

    The plane has the point A (whose position vector is a) and its normal is the direction  vector n of the line L yes?

    Now consider the dot product form of the equation of the plane, i.e. r.n = a.n.

    Try it, thanks!

  Cheers,
  Wen Shih

• limywv

  18 Mar 09, 20:24

  
  

   

   

   

• wee_ws

  18 Mar 09, 20:33

  Hi,

    But then, the problem statement says plane is perpendicular to L yes?

    Thanks!

  Cheers,
  Wen Shih

• limywv

  18 Mar 09, 20:34

  
  

   

   

   

• wee_ws

  18 Mar 09, 20:37

  Hi,

    Great effort! It is important to develop the skill of reading deeply the requirements of the problem. Jiayou!

  Cheers,
  Wen Shih