Just help me to check homework on vector calculus

  • Thread starter denian
  • Start date
  • #1
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just help me to check homework on vector calculus :)

Find the equation of the normal vector, tangent plane, and the normal line to
the graph of the equation at point P.

here's the equation and my solution:

http://www.mrnerdy.com/forum_img/p1.JPG [Broken]
[PLAIN]http://www.mrnerdy.com/forum_img/p2.JPG [Broken]

please help me verify if my answer is correct. tqvm!
 
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Answers and Replies

  • #2
HallsofIvy
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Do you understand that most people are not going to download a file from someone they don't know?
 
  • #3
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sorry. changed it to jpeg. :)
 
  • #4
HallsofIvy
Science Advisor
Homework Helper
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Yes, very nicely done!

Those of us who dislike fractions (third grade trauma!) might prefer

2x- y+ 2z= 0 for the tangent plane (multiply your equation by -2) and
[2t, 2- 2t, 1+ 2t] for the normal line (replace your t by -2t) but your equations are completely correct.
 
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  • #5
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HoI, thank you very much!
 

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