1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Finding gradient vector

  1. Apr 10, 2007 #1
    1. The problem statement, all variables and given/known data
    Find the angle between (grad)u and (grad)v at all points with x!=0 and y!= 0 if
    x =( e^u)*(cos v) and y = (e^u) (sinv) .


    3. The attempt at a solution

    is not here x and y a function of u and v? How are we going to find grad of u and v? Should we pull out u and y from the equations (I mean if x =( e^u)*(cos v)) then u=ln(x/cosv) etc. )
     
  2. jcsd
  3. Apr 10, 2007 #2
    No, you write u and v in terms of x and y. Here's a hint to start with: sin2x + cos2x = 1
     
  4. Apr 10, 2007 #3
    thank you very much, ı understand. (ı found the answer as pi/2. I hope it is true)
     
  5. Apr 10, 2007 #4
    It's certainly true.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?