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!

Need help integrating? Format Help?

  1. Sep 9, 2013 #1
    1. The problem statement, all variables and given/known data
    This may seem like a strange question but I need help putting and integral into wolfram alpha/mathematica. I have to find <x>, <x^2>, <p>, and <p^2> for a given wave function. I know the formulas for all these values but the wave function is ψ(x,t)= Axe^[-x^2 ((sqrt(km))/2h)]*e^[-3it/2(sqrt(k/m))]

    so the partial derivatives are long and hard for me to format...ive been trying to input this equation and its derivatives for almost an hour now and can't get a compatible format.. anyone able to help? or maybe there is a way to reduce the notation or does something cancel out? thanks

    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Sep 9, 2013 #2
    My statement is most likely moo, but why not solve it by hand?
     
  4. Sep 10, 2013 #3
    I suspect the question isn't worded clearly enough for me to be certain this is what you are really looking for.

    Perhaps this will help with your notation problem

    http://www.wolframalpha.com/input/?...2+(Sqrt[k+m]/2h))*e^(-3+i+t/2(Sqrt[k/m]))+,x]

    But I'm guessing there still are not correctly placed () in that somewhere.

    If you can provide a more detailed and clear question of exactly what you are looking for then perhaps I can provide a more relevant hint
     
    Last edited: Sep 10, 2013
  5. Sep 10, 2013 #4
    Solving equations like this in Wolfram is a fools errand. You have to use your noggin!
     
  6. Sep 10, 2013 #5

    D H

    User Avatar
    Staff Emeritus
    Science Advisor

    Or you won't learn. This problem is set up to be easy to do by hand.
     
  7. Sep 10, 2013 #6
    I cannot argue with that!
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted