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

How to solve this equation?

  1. Feb 22, 2012 #1
    I tried to solve this equation. can anyone please look at this and tell me if this is correct? If not help me out please.

    5lrpg3.jpg
     
    Last edited: Feb 22, 2012
  2. jcsd
  3. Feb 22, 2012 #2
    You can find out whether it is correct by subtituting it back into the equation. I think it doesn't quite work out the final answer seems still to be dependent on r.

    In the second line you are suddenly missing a term from the product rule.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook