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Need help integrating? Format Help?

  • Thread starter bmb2009
  • Start date
  • #1
90
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Homework Statement


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

Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
56
2
My statement is most likely moo, but why not solve it by hand?
 
  • #3
1,069
29
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:
  • #4
56
2
Solving equations like this in Wolfram is a fools errand. You have to use your noggin!
 
  • #5
D H
Staff Emeritus
Science Advisor
Insights Author
15,393
683
You have to use your noggin!
Or you won't learn. This problem is set up to be easy to do by hand.
 
  • #6
56
2
I cannot argue with that!
 

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