Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: What am I doing wrong?

  1. Apr 23, 2008 #1
    1. The problem statement, all variables and given/known data

    See Image

    2. Relevant equations

    See Image

    3. The attempt at a solution

    See Image
     

    Attached Files:

  2. jcsd
  3. Apr 23, 2008 #2
    You're right, it is a conservative field - thats the key to the solution.
    I think you're trying to use path independence, which is also key, but try it another way.
    you're looking for the integral of F; and F = grad f.... well... whats the integral of grad f?
     
  4. Apr 23, 2008 #3
    Actually, I can't really see a problem. So...am I really just that rusty? What's the answer supposed to be?
     
  5. Apr 23, 2008 #4

    HallsofIvy

    User Avatar
    Science Advisor

    The only thing you are doing wrong is that you have not finished the problem!

    You have (9- 12+ 4)- (1/4+ 1- 1). Okay, what number is that?
     
  6. Apr 23, 2008 #5
    Well, that answer is 3/4, but the answer in the back of the review has -27/4.
     
  7. Apr 23, 2008 #6
    I have that written out.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook