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Velocity of a bee moving along the curve of intersection of 2 surfaces

  1. Jun 21, 2013 #1
    Hi, I've attached the problem and the solution. I understand the solution except for one thing. I've circled the part I'm having problems with. How do I decide if the circled part should be
    f2(x,y,z)=x2-y2-z or
    f2(x,y,z)=z-x2+y2

    I'm sure it has something to do with the fact that the problem statement states that the bee is moving in the increasing direction of z, but I just can't figure out how it translates into f2 being one or the other. Or are both answers acceptable?

    Thanks in advance for the help!
     

    Attached Files:

  2. jcsd
  3. Jun 21, 2013 #2
    Never mind, I figured it out.
     
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